When we talk about vote fees returned, if Joe were to create 100 accounts voting 100 times with 100 bitcoins and there are only 100 other people voting 1 bitcoin each, then the vote total is 200 bitcoins with a needed 1000 bitcoins for the proposal to pass. All users would get their bitcoins returned.
If the vote fees fund the proposal, what is stopping Blizzard making 900 accounts and voting with 1 bitcoin in each account and then they get the money back when they win.