What build are you playing? Like most fights, Maven gets significantly easier just by jacking your dps through the roof. Also like most of the boss fights, once you do it a few times the mechanics start becoming way easier. Minion builds (and probably totem builds to not quite the same extent) make the boss fights easier too because you only focus on dodging stuff, instead of having to try and squeeze in damage clicks between dodging.
I do agree, though, I find the bosses and all the mechanics stuff not fun at all, especially with super high cost. Uber Cortex is the only uber i've ever done, I think I tried all the others once each and just decided to hard pass on them.