Sykar
Arcane
I had to reconfigure some stuff at the end of elite (mostly components to bring up resists) but I think that's a good thing personally. The harder difficulties should force you to realize character build weaknesses and figure out how to proceed smarter. I'm currently towards the end of Act 3 on Ultimate...so far it's not too bad but my clearing speed is starting to slow down. Need some new gear I think :D
I'm sure there's stuff that does need to be balanced, though.
As long as it doesn't turn into making only tank builds viable I am fine.