It's a refreshing idea, but this doesn't take care of those who have pumped and dumped before and could actually afford to make more scamcoins with the money they already made on their previous coins.
Something like this might actually give more power to the scammers since people would believe these coins would have some sort of legitimacy and be more apt to mining and being sucked in to another con.
Agreed it might look more legit, and if whatever scam or trojan can make more than the fee than it will continue if they are persistant. But those people usually dont pay for anything.
Requirement-based, like needing to be open source, or delete thread due to potential harm would be a start for giving less power to some of the crap coins. I know there's other forums, but not nearly as influential - google rank, posts, visits, new coin releases.
There's got to be other ideas to stop the devaluing of good coins. People don't seem to get that following pump and dumps can harm the economics of their other coins.