Window's Sticky keys is a common one (when pressing shift 5 times quickly). And Google desktop's 2x Ctrl key for its google search shortcut.
These can be changed by the use of course. But I'm sure uses don't really want to remap or switch off things that they probably hadn't worried about before playing this game.
I've also had to take into account that German, french, Russian keyboards for example have certain keys in different places. So, I've remapped the keys to the fps style WASD & Space. This seems to be the best solution for now.
Later down the track I'll create a key mapping screen, but it's not that high on the list right now.
See how this goes in the next playtest.