That'd be very difficult to do. We could force them to use a blank inventory, so only TNTs...
The anti-camping is the fact you don't need your flag to score. If some scumbag goes and keeps the flag for 5 minutes, well theres no chance the opposition can win.
CTF-Osiris I love the map. Played maybe 4 times? I say, defending the flag is quite easy for myself because of the upgrades I chosen. Maybe have other exits for the flags there?