Ptolemy did indeed seize Phoinikia. He did so in the wake of Triparadeisos and this was most definitely prior to the Old Rope's death. Just how that was seen by the regent, Antipatros, our sources do not bother to tell us though Laomedon's landing up with the Perdikkan generals might be a telling point. In any case, if this is 'rebellion', it is against Antipatros and all he represents but no source describes that.
It needs stressing that Diodorus narrates the activities of all the major actors individually for the great part. This means that events for one actor do not necessarily follow the events described for the preceding character; Diodorus goes back and begins again. Allied to this is his habit of dealing with a campaigning season under the archon who took office in the summer of the season he is narrating (though not alaways). This will be shown below.
You have a need to see the democratic revolution in Athens as an immediate consequence of the diagramma; hence this diagramma must be promulgated in Xanthikos (approx March/April) of 318. The Athenians, though, were rather well disposed toward Plod earlier than this date. Syll_315, to which you referred earlier, indicates that Athens (the city not the harbour) was already a fan of Plod. The seventh prytany (very roughly month) places this in February, though very early March is just possible given we have no day of that prytany. Plod is not placed in Phokis until just prior to Phokion's embassy and consequent death. This means Xanthikos and, given the seemingly fast nature of events, later in that month for Phokion's death is in early May. But there are more serious problems with your position.
Diodorus is clear that Pold called his synhedrion in Macedonia (“Meanwhile in Macedonia, Polyperchon, the guardian of the kings[…] called together all the commanders and the most important of the other Macedonians” 18.55.1). He is not in Phokis when this consilium takes place. Also in Macedonia at this time are the envoys from the Greek states for Diodorus explicitly states this when noting that immediately after this synhedrion had decided on a course of action that Plod addressed them (55.4). What he announced was the diagramma of Philip III and this was aimed squarely at Kassandros by blaming all the ills on Antipatros. Philip III will restore matters as they were under his father and the envoys were sent to their cities.
The envoys having returned to their cities, Polyperchon then wrote to “Argos and the other cities ordering them to exile those who had been leaders of the governments in the time of Antipater” (56.1). This is not the diagramma but specific follow up instructions as a result of it. At the same time Diodorus writes that Plod also wrote to Eumenes in Asia urging him to keep the faith with the kings (18.57.3-4). There is no timeframe for these actions and given Diodorus summarising, it would be a mistake to infer they followed immediately on the envoys leaving Macedonia. Indeed Plod could have given these letters to the envoys were that the case. They were written and dispatched at some time following the promulgation of the diagramma. In any case, Diodorus states that Eumenes received these letters “just after he had made good his retreat from the fortress” (18.58.1) and so in the spring of 318 (defeated and locked up early spring 319: 40.1 & 41.1; released after a year 53.5) . Now we note that although Diodorus has inserted the archon for July 318 – July 317 the Sicilian is narrating events beginning in the early spring of 318 following hard on Eumenes’ release. Again, Diodorus notes Eumenes’ activities from what would normally be moving out of winter quarters 319/18, those winter quarters being Nora for Eumenes (53.5). The arrival of these letters is likely when Polyperchon is in Phokis – March/April. Given there not being airmail, let alone email, in 318 BCE and the sending of the letters comes sometime after the promulgation of the diagramma, one wonders how Polypercon managed to get these letters to Eumenes if he actually promulgated the diagramma in Phokis in Xanthikos of 318.
On the Democratic revolution, I can find no evidence that Plod brought any exiles from Thrace with him into Phokis nor that Alexander did so. What we do know is that the democratic government's default leader was one Hagonides. It is he that drives the entire case against Phokion. We are explicitly told by Plutarch (29.4) that Hagonides was resident in the Peloponnese. At 32.1 Plutarch tells us that Polyperchon wrote to the Athenians "that the king restored to all Athenians their ancient and democratic form of government". Now this may be Plutarch's single sentence view of the diagramma but it more likely reflects a response from Plod to the appeals from Athens for aid in removing Nikanor and in enforcing the diagramma. Plutarch actually writes that Polyperchon sent this to trap Phokion. This implies strongly that the revolution was yet to occur. Plod thus moved south in the spring to affect enforcement of his political manifesto and Athens was top of the list
To remove Phokian Polyperchon required a hostile democratic government. This was not in place until Plod sent his son Alexander to Athens in the early spring of 318. Plutarch provides the detail that Diodorus summarises out. Plutarch says that Hagonides was in exile in the Peloponnese (Phoc
. 29.4). When Alexander arrives he does so with “exiles who entered the town with him”. Following upon this Hagonides accuses Phokian of treason. It is a fair bet that these exiles have gathered with Alexander and that Hagonides is one of them – there is no record of him before this and he surely could have made the accusation before had he returned earlier.
The replacement of Menyllos was not at the behest of Antipatros, it was entirely Kassandros’ doing:
Antipater, a little before his death, had appointed Polyperchon general, and made Cassander a chiliarch. But Cassander, far from being satisfied with such an appointment, hastened to seize the supreme power, and immediately sent Nicanor to take the command of the garrison from Menyllus, and to secure Munychia before the news of his father's death got abroad.
Menyllus was clearly the Old Rope’s man and Kassandros was ensuring that Athens would be loyal to himself. Were this an appointment ordered by Antipatros, there is no need for the replacement to be carried out before news of the Old Rope’s death was known.
To the matter of Kleitos. Diodorus tells us that once Antigonos had news of the Old Rope’s death he decided to pursue his own ambitions. The first thing he does is to send Hieronymus, returned from his mission to Antipatros (42.1), to the besieged Eumenes to try and co-opt him. Hieronymus may have been with Antigonos though 50.4 places him in Nora ("he summoned Hieronymus the historian, a friend and fellow citizen of Eumenes of Cardia, who had taken refuge in the stronghold called Nora"). Either way, it is clear that Eumenes is still in Nora. He then calls a synhedrion of his philoi
and lays out his future plans (18.50). At exactly the same time as this (“While Antigonus was engaged in these matters” – 51.1) Arrhidaios (the satrap) sets out to besiege Kyzikos. Antigonos at this time happened to be “tarrying in Kelainai”(52.1) and sets out to deal with Arrhidaios. Now, Antigonos is still exactly where he had convened his synhedrion as Diodorus has made plain. At 52.4 Arrhidaios sends a part of his army to relieve Eumenes. This is the second clear notice that these events are taking place while he still in Nora and thus before his release in the spring of 318.
Some conclusions can be drawn. Antigonos had retired to Kelainai after his successful summer campaigns against the Perdikkan generals via a meeting with Aristodemos in Kretopolis on the way in 319 (with his “with all his forces” – 47.4). While here he confers with his philoi
about his coming campaigns and learns of Arrhidaios’ move on Kyzikos. He is clearly in winter quarters as is plainly indicated by Eumenes still being locked away in Nora. The events narrated by Diodorus are taking place over the winter of 319/18. Thus, after marching to Kyzikos and then back, Antigonos drives Kleitos from his satrapy. This is clearly prior to Polyperchon arriving in Phokis for Kleitos does not escape to Phokis, he escapes to Macedonia (52.6) and then travels south with Plod in the spring
You’ve made a valiant attempt to push matters back but the argument is unconvincing and the evidence does not support you. The diagramma was promulgated last quarter of 319. The actions of Arrhidaios take place over winter 319/18 when the One Eyed is in winter quarters in Kelainai and Eumenes firmly locked in Nora. Plod moves in the spring of 318 to take control of Athens which is struggling with the implementation of Plod’s plans and Euemnes receives the letters Plodyperchon wrote to him subsequent to the announcement of the diagramma.
I’m sure that readers are likely taking on the 1,000 stare at the minutiae of this debate!