Sometimes I wonder if flying mounts were a good idea.
The thing about flying mounts is that flying mounts basically obsoleted geography. You fly up, then fly directly to your destination in the air. There's just air around you, a blank emptiness.
Whereas for ground mounts, where you are matters. Sometimes you cut across country, sometimes you follow the road. You're "in" the scenery.
Not to mention that when you see people on the roads, they're much closer to you. They're sharing the road. When flying, it's basically seeing someone pass you at a great distance. Another airplane, or ship on the horizon.
Flying mounts are cool, no doubt. But I think in a lot of ways, they started the trend of separating players from the game world. I wonder if the novelty of those mounts was really worth it.