I find that blizzard has never had PvP and PvE balanced. A huge difference is racial abilities which make it hard to balance around already (they should get rid of them). In many cases one of those branches is a PvP focused like frost mage. Other times one tree is just better out right. Then come comparing lets go with tanks, druid bear form still is very weak, the DK tank form has always had balance problems., etc. Saying blizzard has done a good job with balance is a bit far fetched they have been dumbing down the skill trees since WotLK to try to have less variables to balance. Even now FF14 is seeing balance issues that need fixing right now, adding choice seems like it will just make it longer for the FF14 team to balance which I am not a fan of.