I'd like to suggest a fix to the background (camera) moving when you click off of your content. Sometimes I click off by accident and the screen moves when I didn't want it to. Is there a way or could you make a way where the background (camera) uses the alt key to move?
I am presuming that Nathan means that the canvas will only move with the mouse, while the Alt key is pressed. This could be an optional setting, easy to implement I would think. Gets my vote.