I wouldnt say remove them entirely. Instead, only remove them for synths used in the airlock and let them reset on a wipe. Synths used in an arena still have a cool down due to ammo drops being possible and make the timers for each type seperate. Too many times have I hade to wait 10 mins for both a Special synth and Heavy. The time wasted in the airlock for synths and supers is the biggest pain. Also make modifiers activate once the arena is entered and the airlock be a modifier nuetral zone. With trickle on, waiting for a titan's bubble after a wipe was rediculous while attempting Qodron.