Thanks for all the input.
Rom: When a 4 player game is being played, I intend to have the controls mapped so 3 becomes 1, 1 becomes 2, etc. So, the only reaching is for player 2, but that is unavoidable, for looking good's sake
Hooded_Paladin: I agree. The buttons for 3 & 4 seemed a little high up, and the player 1/2 buttons seemed low. Also, the angle was wrong. We were orignially try to keep the panel from being to wide, but that seems more and more difficult.
Talking_Octopus: Thanks for the layout pic. I may use that when I redo my cp. I don't think I want to put the trackball any lower, as there is already a slight problem with running into the 2 player joy.