Denied increased credit reward for different upgrades.

So the title pretty much says it all, for further incentives to upgrade and generate revenue for NBB why not increase credit rewards based on upgrade, for example:

free members: 1 credit per post / 2 credits per thread

Prime: 2 credits per post / 3 credits per thread

Supreme: 3 credits per post / 4 credits per thread

Divine: 4 credits per post / 5 credits per thread

Just a suggestion but I think it might boost conversions in upgrade sales and as I said is a further incentive.