I don't care about the wallet system. I think it's fine the way it is. I never have to use rupees unless if it was mandatory. One thing I would like to see though, is the bank system from MM.
Although the size of the moon in MM is large enough to destroy clock town. According to the moon crashing scene, it destroys Clock Town and some of the area around it. In the woods where you first start the game, you can't see the moon. So, how would the Hylians know it? Also, this is just me...