Just because acrobatics was messed up in previous titles doesn't mean it has no purpose.
Think for goodness sake:
- climbing steep surfaces
- falling from higher heights
- dodging and performing combat stunts - kicks/tricks and so on...
- wallflipping/wallrunning for example
- perhaps perks for a chance to dodge incoming fire (arrows/magic)
Certainly a whole lot more useful than the current lockpicking perks.