Without risk - there is no win. Without making mistakes - you wont improve.
I think age of empires 3 and EP community the one of the most conservatives ive ever seen. Even a game like LoL changes 10 times more and bigger things, when it has much more money on table to lose...
Changes are for improve the gameplay aspect of the game and maintain balance between the civs. Or at least it should do that.
For me improvements would be like:
I wanna use grenadiers in the game since they are designed to use however ultra weak - Ep answer: No thats change the meta
I wanna use mercenaries since they look cool - Ep answer: No thats change the meta, they need to stay ultra non cost effective (except some, but those some are okey since thats the meta)
I wanna use other politicians since it would be cool always instapick whats the best - Ep answer: No thats change the meta, there needs to be one option always ( Its funny since it looks like a communist election. You have choice on paper
)
I mentioned once to remove auto stance switch from cannons since thats the most annoying bug in game which makes cannons the most annoying: Ep answer: No thats change the meta
I wanna use halberdiers since they are in the game - Ep answer: No these units were always totally useless thats the way they need to be
Fixing starting crates for removing rng - Ep answer: No thats change the game design, there needs to be unbalanced rng in the game
I wanna use some times natives - Ep answer: No thats change the meta, they needs to be ultra not cost effective
I wanna play spain - Ep answer: Thats the civ designed to be the weakest, thats the meta good luck
I wanna increase wall cost since its almost free which is strange - Ep answer: no thats change the meta
I wanna rework water since fishing ships + docks counter all fighting ships which is strange - Ep answer: no thats change the meta
So basicly exploait all resources which are hidden in the game (lot of choices) and aiming for the balance next to it - Ep answer: no thats change the meta. Even balance is unimportant compared to staying in meta.