RANT WARNING!
The way tasers work is incredibly overpowered, something is really wrong if a taser/stun setting has more potential to be lethal that actual lethal setting, and the only way to stop it reliably is to carry Poly sprays around and time using them properly (ablative armor exists, but there's only one on the entire station, and is not 100% effective).
Stunbatons and flashes and flashbangs and pepper sprays and what have you are fine by me, you have ways to avoid their stun effect by keeping distance.
Peashooters are also fine, they have range but cannot put you out of the fight with a single shot, even to the head, they can slow you enough to let people run up to you and stun them if you want to detain them.
But tasers? 100% effective, unlimited range, stuns people after which you may do whatever you damn please to them, especially if you have cuffs or some spare cables, virtually unblockable. And if the Captain or Warden opens the Armory, the security transforms into an army of full-auto unbeatable stun machines.
I played on a couple of servers and it's been ages since I've seen any more overt traitor activity, because the moment security sees you, BANG! You are cuffed! Hostage situation? Suppresive fire with Stun until everything inside stops moving, cuff everyone and let God Captain sort them out.
ENDRANT