I just played my second game of Ashes of the Singularity. The first time I just didn't know what was going on but once I got the idea of the controls I noticed that it was necessary for me to use the mouse a lot when I was building. The issue was that there are no keyboard keys for the defense buildings. My economy was skyrocketing and I kept loosing time because I had to click three times to build something that was defense related. I ended up almost just going offense. I don't mind if I have to press a key to switch from building offensive structures to defensive structures and then use the same key map for both. I think it will make it a bit more fast pace.