Multiple audio tracks
I think a cool feature that would be cool is multiple audio tracks when recording. For example, one for your microphone and another for the system sounds.
It would make it easier for editing purposes.
We've had a few requests for different audio sources to be saved into separate tracks to make editing easier so it is on our list of things to take a look at. Not sure when we will get to it though as we've got a few high priority items that we want to focus on.