Now that's quite interesting. Resetting it to 1 everyday will force the users to keep betting and wagering everyday.
I will try to make some bets on multiply BTC and verify how many bets would it require for me to wager an amount that would give me 2 WoF spins in exchange for RP.
You must have missed my answer. It isn't reset every day or even reset ever. All wagering requirements are proportional to your total free winnings. So if you keep the ratio of how much you wager to how much you win from free plays the same the number of WoF you can exchange each day will remain the same.