Its a good idea, when someone already knows the basics and wants to learn advanced techniques it is often better to teach "on the fly". Basically, instructor watches student and offers up suggestions. Could even be done with instructor watching student in a pub game.
We could try organising some more advanced sessions, perhaps between two opposing teams of students, then instructors (or anyone the students or instructors regard as knowledgeable) could spectate and offer any thoughts on advanced tactics that could be used.
Or we could do it Top Gun stylee with Trainees vs. Instructors (As long as I get to be Viper
Edit: Also, who maintains/administers the Outreach TS3? If we could get a channel, available instructors could just stay logged in to there when they are available, and students could ask them for training there and then