Fragger is hands down my favorite merc for straight forward combat.
Hes awesome the way he is, but i just notice that nader has a more effective special weapon (Probably do to its capacity AND regen rate) and that martyrdom thing.
Im not asking you to rebuild him from scratch or anything, but maybe look into giving him a second ability?
Could be something small like ammo (I know these are already 3 ammo giving classes) or maybe something simular to nader’s martyrdom thing.
Just a thought
Let me know what you guys think
I gave you a LOL for it 
it’s too good.