The feature that I would like to see added would be a list of applications that GridMove does not try to resize and move. It would be an Applications Blacklist and could be empty by default.
The reason I think that this would be useful is that I use clicking and dragging the Title Bar to initiate moving the window. However, many windows are small enough (such as a Buddy List), that I accidentally click them in a spot that triggers GridMove. I know that I can hit Escape to stop the resizing and moving process, but I believe it would be nice to specify programs that GridMove will never try to resize and move.
Congrats on this innovative program!