[REQUEST] Gift Voucher integration with v1.5 credit system

I know it has been requested a lot for the addition of gift vouchers, and if it's not already planned for 1.5 I would like to point out how you seem to have done the majority of the work already if you have coded the reward points / credit system. Using this already implemented system you could have vouchers when claimed add credit to the users account instead of the traditional vouchers systems that are used at checkout or are part of an additional "credit balance" system. Perhaps this was already considered but if not I just wanted to mention it as it was my plan to do just this when I considered how a customer loyalty system should work.