Not to be critical but the whole store needs to be revamped to accomodate all this stat inflation. This includes items that cost RP.
Also, I like the idea of buildings that cost RP. As well as a weekly RP item purchase similar to how the gold-bought weekly items work.
Uzis should be purchasable with respect points.
Perhaps RP could be exchanged for $$$. Say, 1,000 RP could be exchanged for $1,000,000. (Not sure on exact exchange rate but you get the idea)