No, we need ground mounts. Not only would it limit artistic design if they focused purely on things that made sense for flight, but many of the mounts that are made for flight look silly on the ground. HW Birds running around just... no. Remember there are always zones we cannot fly in, both before unlocking flight and even after. Bozja is a perfect example, as is PvP, Rhalgr's Reach, and Idylshire.