I think having one person to one each tournament would be best. I think it's a little much to have one person run two games such as GG and MB. What's the motivation? Well if there's no one to run the tournament for that game, there's no tournament for that game. :3 Should asign one person and a back up person to each game.
For example: GG run by Katana- when he's there, run by Honnou when he's not there. Not volunteering Rodrigo or anything, but just using an example.