| Arkus Shaleskin |
As long as he can handle it as a GM, I think it's a great idea. Players ditch tables just as often as GMs, so it's kind of like survival of the fittest. Worse comes to worse, he can probably combine groups who have flaking players to pair it down.
Personally, if I was running a gestalt PbP, I would run one table with 3 players. Gestalt lets less players fill more roles, and a smaller group means less people to rely on and wait on to get the table moving at a decent pace. The only downside is that if someone drops, you have to replace them with a very similar character to keep the party paradigm together. Of course, there's no shortage of players wanting a grab at gestalt, so it's hardly an issue.