I'll add a cancel button and hot key to all the action input boxes in the next build. Good suggestion.
It's been pointed out by someone else that the background is too dim and I actually went back and played the old "demo" version this weekend and noted that the game was much "brighter" then so I will also try raising the overall ambient light level on missions.
Glad you mentioned the level generation. I still see some bugs occasionally so if the level doesn't load you may have to force quit and restart. I'm also occasionally seeing 2 rooms spawn on top of each other which does weird things to pathfinding. We'll definitely get those problems solved in the next build.