very often i hit the edge of screen when not intended and the annoying unwanted panning ensues. hated this in sin 1 also.
happens when rotating and when clicking things close to edge.

ideas.
1. have the panning start slow and ramp up to speed. this would make it tolerable.

2. panning could be toggled off when rotating cam while pressing rotate cam button. so often when rotating too far, the edge gets hit by the cursor.

3. could bind a key/mouse button to edge pan.