I saw a post a couple of days ago (could not find anymore) here, where someone was asking to include more types of animals (e.g. based on the biome), which would be a very great visual gimmick. (E.g. replacing wolf with tigers (e.g. with different stats), deer with antelopes etc., just be creative)
In addition, I think it would be great and make the world / maps amazing if there would be Gaia you cannot interact with:
- small animals (e.g, squirrels, bunnies) running around near forests
- cats, dogs in the bases (I don’t know, e.g., after each “n” building a dog is spawn) that run around and do some random stuff
- bird / flock of birds flying around - where maybe troops might trigger them to fly away
These would be not really a game mechanic, much rather visuals - that if you prefer, should be able to be turned off, for either saving graphic settings, or in competitive to reduce clutter. I believe the vast majority of players would enjoy a living world to play in, instead of maps containing only simple ressource nodes.
I am not a game designer, so I cannot judge how complicated is it to add things like that… My initial feeling is only it could be done by a couple of talented people… maybe even make a modding contest for this, and reward those with the best ideas, if there are no internal resources.