I don't really like this idea all that much. I consider it spam when a new account posts anything just to attempt to get some quick and easy eyeballs on their project/startup and they have never contributed to HN before that. It feels like they are trying to game our system and I think your offer would only help them do that. What's wrong with earning your way to a RMS post? It would weed out the people who wouldn't stick around for the long run anyway.