The camera movement, it was kinda weird how left clicking to move the camera around and mouse scroll was only to move the camera up and not zoom out from it's perspective. But then i figured out using WASD and that helped. I ended up getting comfortable with it, but I didn't like it that much. very sluggish. If you're lerping the camera position I could increase the time factor a bit.
The main thing for me was the way in which you attack the enemies. Do I have to select a building and click on every enemy? It seems like my little swarm dudes only kill one enemy unit and then return to base. I wish they auto attacked nearby enemies until I told them to come back. It felt like too much to micro manage. That, or I am not understanding something.
Also maybe I'm just not into the type of micro managed game you want to make. I have friends that are really into Star Craft 2 and love micromanaging their units!
Also I wanna say your game has such a great polished feel to it. Nice settings menu for audio, and cool menus and transitions. Really well done there.
Hope I could help! :)