If you can't beat them nerf them. Gotta love that.
With the current balance you can start nerfing all other professions aswell.
Try fight a selfbuffed 112 trader then selfbuffed. You will most likely kill him in 2-3 hits. His heals suck before he has drained 2-3 times, he most likely can't cast evadebuff, he can't cast any decent ac-debuff before a great deal of drains.
Or if you are in Notum Wars beta, try start a lvl 100 trader and see how much they "rock". Gotta say - they aint anything special whatsoever. Traders shine at lvl 170+