I really like the new stability system! Previously, stability was an all or nothing issue. Either it had no direct effect (only forcing you to consider it while expanding/building), and if you collapsed it was game over. Now it is possible to endure several periods of instability, which greatly contributes to the feeling of an overextended empire tethering on the brink of rebellion.
I played a game with the Antigonids. Sadly, I didn't take any screenshots or make notes, as I expected to fail the first try. However, I managed to win.
It is great that the replay function is working!
My game plan was to concentrate on military early on. The starting units sufficed to take Greece, while mercenaries could beat back the Seleucids and take their western cities. I then made peace with the Seleucids and used the plunder to hire more mercenaries to conquer Egypt. A long consilidation period followed, where I fixed the economy and got monarchy. I bribed the Romans with everything I could think of, so they didn't declare war and stay small. The final push against Seleucids was quick with mercenaries, and then it was just a question of teching and building wonders. Slaves from the constant stream of barbarians were essential for success.
It was really fun. The main area of concern was, in that game, the general lack of aggressiveness from the ai. The Seleucids sent a few waves early on, but were mostly passive. Egypt had a few garrisons, but only defended. Rome did send an expeditionary force to take Pontus, but not against me. Parthians stayed calm (with me keeping Babylonia). The military challange came from the barbarians.