Let me preface by saying I'm all for increased mount speed, the faster we can move around, the better.

That being said though, the ARR zones are small enough that our current mount speed on top of being able to teleport is fast enough in my opinion. However, the flight speed for HW zones which are significantly larger definitely needs a boost, I feel that the flying speed could stand to be increased but not the ground mount speed. For the next expansion we still have to see if we're going to be able to fly and if we can fly, how big the zones are. If the zones are HW sized without flying, then we absolutely need a ground speed increase, if there is flying then I'm fine with leaving it as is.