I'm 25 or so hours into a Macedon run through and it's all getting a little bit stale. It's just war, swallow up a blob. Wait for manpower and AE to go back to normal. War, swallow up another blob, ad infinitum. There is no challenge at all. None of the other mechanics have any sort of meaningful impact on the game as far as I can tell. Don't need to build buildings (apart from strategic forts), don't need to do any pop management, characters are just there to fill jobs, loyalty/prominence/corruption do nothing, diplomacy is really shallow no need for it other than fabricating claims and improving the opinion of vassals to integrate them. On top of that the AI is terrible, especially for war, I can confidently declare war on nations guaranteed or allied with great powers because the AI is too stupid to build boats, and if they do they just put them in one easily manageable stack. The bones of a good game is there but it's not there yet.