I've been thinking of making the traps for CTC 3 more customized than CTC 2. Then it hit me, use the Ping Tool to activate/deactivate traps on the correct player's side.
My only question: is it possible?

There is something called a Ping detector in Hammer, used in the Calibration Course map. So it is possible I think.

I'll fiddle around with it after I get back home. I got two great map ideas that need to go in Hammer.