Not really, i think alot of people would enter and because theirs alot of threads with people saying "Pick a number get a free account" Tell me why you want my account" First to post gets account" this would be a more legit raffle and people who enter doesnt have to worry about the account getting taken back..
like only people who are quitting runescape can give accounts and people who still play would get them if they win :P like a donation centre? i guess
It's possible, but I don't think it'll happen. As people have already said, nobody can be assed. It would all end up in some "lottery was rigged!" flame fest or somebody would take all the cash or some shit like that.