I've been leveling everything to 60 recently, and from my experience, Monk is decidedly more tricky than other melee jobs, I'll admit, and I DID have trouble with the positionals combined with two three-hit combos (It's fiddly moving to hit the positional while trying to reach for the 6 key) But I tried moving one of the combos to a different keybind location and found it considerably easier, and far more enjoyable. I'll admit that most of that change was due to having a gaming mouse, but I don't think it's the positionals that are the crux of the problem. To me it was the six different buttons to maintain the baseline combo, combined with tanks not moving the bosses to enable safer utilization of the positional bonuses (aka keeping the boss in a position where I was being forced to either sacrifice the bonus, or take damage from an AoE on the ground