Better balance:Yeah that's why the whole sub is crying about CI/Life every day amongst other things.

Better Performance:This is what I get since latest performance fixes. Their performance changes often completely break stuff. As the person with the 2nd highest rated comment said

performance improvements are hit and miss: they help some people, but others suffer. I'm in the latter. Every patch, until my last PC upgrade anyway, the game was constantly getting chuggier for me, despite supposed "improvements."

Not saying there's only bad things, I for one don't have an issue with the current balance of the 6 classes and builds , lockstep was a huge improvement for me, being able to set up prices without requiring a 3rd party program was also pretty huge for me (still not happy with the current state of trading though) and the introduction of unique currency etc tabs was also nice.

Saying "The game is better, the end" just because you enjoy it is naive though.