Would like the ability to prevent the use of a discount coupon and store credit on same order. Stacking discounts like this is very hard for shops with tight margins and account credit hoarders. Also would like the ability to have account credits expire in a reasonable amount of time like 60 days. We have customers that watch lives and participate to just win account credits and then sit on them until we have clearance or a discount code. I have seen similar requests for past 2 years.