From what I could gather from searching in this forum about the topic and research I've done myself, I think that the best POD would be to have either Ptolemy I or II start to use native Egyptians in phalanxes, giving the early Ptolemies much more manpower to use. Having Cilles win the Battle of Myus by avoiding the ambush and then defeating Demetrius could also work with the other POD, as IMO it would give Egypt short-term control of Cilicia and long-term of Syria. Avoiding the whole inbreeding thing is also good.
In any case I'd like to hear your thoughts about this and also other PODs which would lead to a stronger Ptolemaic Egypt.
In any case I'd like to hear your thoughts about this and also other PODs which would lead to a stronger Ptolemaic Egypt.