Here are the things I wish sound rts had.
1. Formations for soldiers, for example. if you had pikemen form a shield wall that would give them some sort of defense bonus.
2. I wish walls actually worked like walls, because any time I would build a wall to protect a city or something they can just, shoot threw the wall and hit me instead of having to destroy the wall first.
3. I wish buildings were able to be captured instead of destroyed so you could then use them to benifit you, capturing farms, barrics, etc. And also station trupes inside of these buildings to give them bonuses, etc.
4. I also wiish, terrain was more used, I'm not  sure if there's a problem with it or anything but know one ever uses the High ground, it's always meadows, and bridges.
That's all.