I think the people who want the new shiny, outweigh the people who want them to go back and polish the old penny.
Besides, I myself as a person who has started from scratch, likes the weight and the gravity of how things progress. Unlocking flying in ARR would not have the same impact as to why and how it was unlocked in ARR, heck it was MOTIVATION to get into HW in the first place. The other difference are that the maps in HW are much bigger in scope than ARR so flying made much more sense in that regard. What I would like them to revamp is separating Summoner from Archanist and make it its own job (I dont even level SUM and i think it just causes problems.) They (SE) wanted to get rid of the whole Job/class system anyway, so separating SUM is just half of the battle.