Actually, I agree with the ERT Karma Job Class. but make it like this:
When spawning as ERT people are given a choice to spawn as what type of ERT they want, everyone has access to Standard. People with unlocked ERT Classes gain more choices. Doors are only accessible by ERT Members designated in that room. Standard Gear is outside the ERT Class Rooms and is readily accessible or spawned-in with. Increase ERT Limit as a small ERT Group really needs more people since server pop reaches 70 - 90 people.
Standard ERT [FREE] - Blue Armor Set (There should be no more ERT Leaders)
Access: Standard Revolver/Taser Gun (Recharge-able), Flashbang Boxes, Optical Meson or Sunglass, SWAT Gloves, Magboots, Security Belt, Stunbaton, A Set of Handcuffs per member.
Medical ERT [5 Karma Points] - White Armor Set
Access: All the Medical ERT Stuff and Spawns inside the ERT Medical Room.
Engineer ERT [10 Karma Points] - Yellow Armor Set
Access: Insulated Gloves, Jetpack, Full Toolbelt (with Omnitool inside and Cable Coils, Analyzers are just... too useless), Metal, Plasteel, Glass, Reinforced Glass. Spawns inside the ERT Engineering Room.
Security ERT [15 Karma Points] - Red Armor Set
Access: Tear Gas, Grenade Launcher, Advanced Laser Guns, Laser Cannon, Taser Gun, Stunbaton, Full Security(Flash, Flashbang x2, Pepperspray, Handcuffs x2, Hailer), SWAT Gloves, Magboots, Tear Gas Boxes x2, Handcuff Boxes x2, L6 Saw and L6 Drums x2, MP4 or that Semi-auto gun and its magazine x2, Combat Knives (Really need to be implemented). Spawns inside the Security ERT Room.
Mech-Pilot ERT [20-30 Karma Points] - Green Armor Set
Access: All the Mechs in ERT and spawns inside the ERT Mech Room. The Mechs are only accessible by ERT Members with the Mech-Pilot Access (Might make another class/job for this to work)