So centralizing the control over which coins can get listed to a small group of senior and hero members, how could that ever go wrong. A scam dev would just have to pay these members on the side to get their coin added. Also there are the implications of giving noobs a false sense of security, that if a coin is listed it must have been through this auditing by 'respected' members so it's not a scam.
To the others suggesting that new coins have to pay a fee to list their threads, where would this money go? I suspect it wouldn't be to charity.
Whilst I agree that something needs to be done, this is not the right way, as others have said most scam coins aren't even obvious until after launch.
Good luck trying to regulate an unregulated market full of participants who hate regualtion though