[Thor]

Credits are used to get dev points faster by refilling energy. If you make it possible to get instant dev points, why would any1 refill their energy? And where would be the challenge and fun?

Example:
I don't like that X player keeps hitting me 20 a times a day, I know I'm close but not training fast enough to catch him because I only play 2 hours a day, so here, I'll drop 250$ on job points and increase my stats by 5 levels each, can't beat me no more can you?

People are already complaining that donators have a huge advantage over non donators (which is normal IMO) but if you give us the possibility to get unlimited instant stats, it will just become ridiculous.