I agree with you that turreting units on boats is cool, but I think once the novelty wears off, this won't bring much enhancement to multiplayer. First of all, in the PR, the range of garrisoned units is doubled, which would result in 140m range archers when combined with archery tradition. So by needing to make turreted units stronger to make a difference on water, you risk adding balance exploits when the ships are brought near land. also, a major complaint of prior navy gameplay was the need to garrison soldiers for ship effectiveness. Needing to garrison much of your total population space on ships to properly fight on water meant a constant labor of garrisoning and ungarrisoning ships to switch between fighting on land vs. sea. Also the current naval design splits ships into classes with distinct roles. By making a ram ship capable of ranged attacks, the arrow ship would be somewhat redundant. My opinion is that the proposal is better off as a standalone mod.

I think they should make the buildings more greek looking. Carthage was founded and ruled by phoenician (greek) men.

I'd get rid of it entirely, they were not at all used in combat whatsoever, or maybe make them much weaker (and more clothed) but they get an advantage when in the vicinity of a mauryan hero 

They should get rid of the maiden guard, this unit has basically no military background, in history it was used for espionage and not for combat.

I think they can keep their black-and-white shields. We can also let them keep their black chiton. I think the most important thing is to stop calling them “black-cloak” or “Melanochitone.”