1) Simplyfied Take Lanes option. Sorry, I still don't get the benifits. The earlier workflow with layers was much easier.
2) Dedicated audio editor (like in Cubase) when double click on an audio clip. I never use the Loop Constructor.
3) A "duplicate midi note remove tool" in PRV. It's quite tricky to observe a note overlay!
Otherwise I am happy with X3e. Thanks for stability improvements!