Yeah I’d be interested to see the effects of larger/more bushes and grass on stealth. It would help dampen noises and make it harder to see things at a distance, which could make things very interesting. Ivy might also have interesting effects since it can essentially block out a window if enough grows. You might even argue that it strengthens things it grows on (or weakens them, in some cases.)
I’d like to see fields and forests stay fields and forests (most of them weren’t being maintained in any way before the Cataclysm anyway) but grass growing and occasional tree respawns wouldn’t be bad for adding a sense of the movement of time. Vegetation in towns would make access to materials a little easier and would make things a big more dangerous late-game. You could even make grass tiles flammable in summer, so big areas of dry grass could be burnt to produce flat areas for hunting, killzones, etc.
I think growable fruit trees/bushes would be really nice. Make them take a year to grow, but having access to semi-regular fruit would be really nice without all the replanting nonsense.
