I must say I really like the new zones. Quest are well made, graphic design, music and atmosphere are awesome. Everything should be cool but to me the leveling never felt worse and I started playing in beta.
The problem is that my character gets weaker every level. The enemies scale with me, so nothing changes except that I am losing things (e.g. old trinket proccs and legendary effects) and that my % for anything like crit etc. goes down.
Leveling should feel rewarding but this time it feels punishing. I think instead of leveling this time they should have simply used achievements to track to progress or something similar, so that is at least does not feel as punishing as it does now,