If anything the last Invasion showed that we probably should have less GMs. The behavior of some players out of frustration is a bit discouraging, and it was all too convenient for them to blame it on GMs with special abilities. If it were something like The Dream, where the NPCs are directed by fair code, then players have no one to blame but themselves for any failures on their parts.
Some factions had more GMs than others. I'd personally prefer more equally-spread GMs and a good chunk of coded forces.
