Thanks Japes!
I suspect the sensitivity controls work but they're very small increments so it's not immediately obvious that it's changing. So that's good feedback for me, thanks.
Hmm, with the drones I kinda wanted them to only break on impacting the environment. So if you knock them over too gently then they don't die. I can see how that's not clear and can be frustrating. Esp in a game like this with limited, persistent health.
So glad you liked the upgrade system, that's where I spent the bulk of my time :)