Small update.
Comparing Act1 bosses:
Monk: took like 15 tries to beat the Act1 endboss (poorly skill gem layout, bad passive tree) (this was nerve wracking, super focus mode to pull off, and took forever) (after this, I thought maybe I made a mistake and warrior was what I was supposed to play, I like melee characters generally)
Warrior: I gave up after like 5 tries... again didn't feel like I knew what I was doing. Bad layout of passive tree/skill gems. Deleted character.
Mercenary : 1st try and easy.... I'm laying on the couch not even playing in a "concentration" state, with full focus to dodge/avoid stuff. Granted better gear/passive tree/skill gems this time around.
I'm just amased how differnt my take on all 3 classes is.
I know thats probably down to me going in blind, not knowing what passives are important on each class early, and what skills and skill gem combos to use. Its just, such a vastly different experience. Not saying that each class cannot function well enough to do bosses.