Having a mount follow you was a nice game feature. I had not seen it in a game and that made it unique and immersive. I dont understand why it was removed. Having a mount just appear/disappear reminds me of every other game i've ever played.
Also, now you have to summon a mount every time you want to mount, and the timer for summoning is longer than the previous timer for mounting was so dismounting to grab something then remounting takes much longer and has become a task.