I was wondering if it'd ever be valid to allow back payment on the XP of a non-subbed account (up to 7 days/week) and it would boost the XP you would've gotten if you were subbed.
this would be a choice

It's not too op being 7 days IMO. There's no room for abuse here, if anything the owner sells more subs tbh because it gives a larger incentive of "Oh hey damn I just fished to 64 fishing, If i was subbed it'd of been 72 fishing by now" Oh let me go sub and get that chunk of backpay'd experience.