I have only one toon (sniper) fully geared bm. Very rarely I do 4.5k dmg (yeah on full green) even using whatever possibly to be used in game (expertise, relic, fully buffed). Our range is a huge issue because melee can jump 30 metres far on a sniper before you use any of your dmg ability then melee can push sniper right and left. Any damage taken must be carried until the moment of death.
I love my sniper, but in wzs what I do most is to try to avoid other players so I can support my teammates while they fight with others.
I believe what can be done is to increase the damage for snipers accordingly, for example commando can heal and it gives commando quite alot survivebility. Commando shouldn't do more dmg than sniper, which sniper has prety much no protection (with shield probe plus evasion you get 3k hits). I really do not get some classes, they heal wear heavy armor and hit like hell. Sniper wear medium armor hit ok and easy prey for any other class wearing equal gear.
Hopefully everything will be ok when 1.2 comes out.