I'm sure its been mentioned many times before, some more automatic micromanaging reducing tools would be nice. Like autoheal. Free worker finder, squadron hotkeying, guard commands etc. If it doesn't already have them I mean (lack of a guide)
Another issue I found with it was lightning. During the night I had to strain to see stuff. I was thinking workers & buildings could have lights on them. These lights would throw out to the surrounding area so you could see attacking enemies too.
Fighting units could have lights they could choose to use or not. Having those lights off means better surprise attack. Having those lights on means being able to see the enemy better.