I dread the idea of traversing entire maps in the current state of the game whether it would be on a mount (chocobo) or not. So in that respect, I think aetheryte teleporting is fine right now. However, I feel like this feature is trying to make up for other poor designs in the game.

Each aetheryte location has a couple aetheryte gates or whatever they are called in game that occupy the surrounding areas. What I mean is like, Cassiopeia Hollow. If they were to seperate each of these aetheryte areas into new zones and modify their appearance so they feel like new areas, I think removing teleporting would be more practical. They could change it so that you can only go from main town > Aetheryte Camp or Camp > Aetheryte Gate. so that you still have to travel. Anima could be reserved to act as a "hearhstone" for those familiar with WoW. Anima would return you to your home point.

It feels like being able to teleport from anywhere to any crystal is in a way removing the player from the environment. For me the game has become log in every 3 or so days to let my aetheryte recharge so I can teleport everywhere to do my leves. And I don't really like that.