Not that this is a bad idea... just... RS already does that. And it ads a crazy complexity to otherwise simple game.
Ok. Then we will have like in the vanilla. Just few legionnari units.

Thracians adopted roman equipment and tactics for a while (after that while, they wore a roman province).
I don't know about this one. I rather not use them. It is better to just make vanilla units.

Romas used bridges on their ships in the first punic war, but that fleet sunks in a storm. After that, they use normal ships.
Still don't understand. You mean you would like the romans not to have that third type of ships ?

+5 farming from temples for the macedonians is crazy. They have better farming, than Egypt! Witch leads to more money, witch leads to macedon overwhelming the map in 3/4 of the games. That is one example. (logic behind should be: They are crazy-ass in the military - they don't need a ton of money on top of that, not the opposed). Even thematically it fails - macedonians wore never much of a farmers.
Ok I get it- nice !


Actually this leads to the question - what should temples do? My ideas:
The same as my idea was. It will be like that,but I will tell you which gods to put.