Suggestion: Mouse Scroll
Using scroll wheel in and out over and over again is too cumbersome when I just want to move the screen a little bit to the left
When the mouse is at the edge of the screen it should scroll the screen that direction.
Another thing: When running dual monitors, the curser can escape the game screen and move into the second moniter, so you could probably fix this by checking if the cursor is outside of the bounds of the current resolution and if it is then put it back inside.