In my opinion, there are too many goddamn levels. The delta between 100 and 110, or 110 and 120, starts to feel kind of meaningless. Also it's no secret that the leveling grind feels a tad excessive to most players at this point.
Given the likelihood of level scaling tech spreading throughout existing pre-Legion content, thus obviating the need to have enough levels to reasonably cover available content, doesn't it seem like it's about time for a level squish in WoW? Freshen things up a bit, ya know?
I would personally like to see max level squished to 20 at the end of Legion and have 8.0 cover levels 20-30. But I have no idea what I'm doing, so what do you think?