In the main menu the arrow buttons for character up/down have the same function as mousewheel up/down. Holding the buttons down does nothing, so I never use them.
I suggest changing these buttons to page up/down, or adding buttons with this function. Not that I mind scrolling through the list, but skipping through pages would be a nice feature to have when that list is getting longer and longer
Another, maybe even better solution to this extremly severe problem is a scrollbar
edit: I didn’t think about gamepad funtionality, never played GD with pad.