I loved how QB45 and EDIT allowed you to split the editor area into 2 separate scrollable areas. It would kinda be like 2 editor gadgets (one above the other) with a horizontal splitter, viewing the same source. You can scroll the top to one part of the code and the bottom to another. Whatever you typed in one would be updated "live" in the other as well. It saves alot of time from scrolling back and forth through code, much more than the Procedure browser offers.
So yea, I'd like to be able to split the editor in the visual designer so I can work on one part of the source while being able to look at another part, and be able to click on the other part to start editing there as well.
I would also like to see a setting in the color preferences for comment background color, and have that color extend all the way to the right side of the editor.