I don't think I'm alone in not liking the box that pops up warning you can't get any more xp from donations. It's annoying to get 5 or 6 times in a row, but also its too similar to the one that said "You are reaching favor limit", so I keep getting confused and thinking I can't donate any more to that shrine, then move on and realize its just the silly "no more xp" dialogue.
Maybe if it can just warn you one time?