I'd say hidden is about 6 admins away from being able to assume they have too many.
Honestly, it'd be nice if we had at least 5 or 6 regular admins at any one point. 4 servers is a lot to keep track of with a small number of people, and you have to realize, a lot of the admins actually enjoy playing the game. Kind of sucks to constantly have to drop out and go to another server because you're needed there for a quick ban/kick.
Still, ultimately up to Pyro. Never played with most of the people applying now, so can't really say one way or another.