Would this be a good idea?

I had an idea for a new map that I started... it's where 2 players 'make' the creeps, and the rest of the players face these creeps created by the 'TD Creators', and the TD Creators can adjust max life, how many are spawned, and so on...

I remember a map like that back on starcraft. It wasn't very entertaining, but then again, it was made with the starcraft world editor.

Its a good idea... in fact, its such a good idea people have done it before in WC3. I've seen a map where 4 people spawn creeps, and 4 people defend. Then the attackers can upgrade life and armor of their creations.