I think we all wish for that to happen but the thing is that it wont. He moved somewhere on the east coast to start new with his fiance. I hear he has a great new job and im guessing he is now marries/ getting married soon so i doubt that he would move all they way back to go back to doing what he was doing before.
Giant Bomb already has a video producer guy in Vinny anyway, and that was Rich's job back at GS. Maybe one day when Giant Bomb offers too much audio/video content for one person to handle, someone could kidnap Rich and ship him back west without his partner knowing.
I don't think we'll see any of the old great personalities from Gamespot join the Giant Bomb crew any time soon. They all seem to have great lives far away from California. They might turn up as guests now and then but that will probably be the most we can hope for at the moment.