Why is it silly to give static SP for Leve's? It makes perfect sense to me or is there some underlying issue I am not seeing with it that you can educate me on?
Also by giving "silly" static SP/EXP upon completion is the incentive in your case as you would not want to waste time killing things you didn't have to. SE would have to balance the Leves in a new way though to give static SP/EXP and that is completion time. If the SP/EXP was static then everyone would just do the quick Leve's so this would have to be addressed also and make short Leve's longer.