I think this is mostly a good idea but I hope the fee will be not to high (about 300-500 sounds reasonable to me). 5000 is just insane though, even many good indies will not survive that I think. What I do like about a fee is that it will probably reduce the noise better than a voting system. I wonder though how they will handle it with entirely free games, my quess would be a smaller fee (a bit like there currently is).