Hello there, I've been having a lot of fun recently with the reworked mount system, and well done on that and its really fun. One thing has been annoying me a lot though, ground mounts (horses and adasaurs) suffer a lot from "falling". What i mean by falling is literally dropping 1-2 blocks when using it on terrain, you lose most or even all of your momentum and speed, which is incredibly annoying, same thing with using jump, you lose all of the momentum and not fun to use. This is basically the only thing thats major and ruining the fun a little bit, also add back the horse jump bar please, as its gone (at least for me) and im timing my jumps based on muscle memory 
Thanks for impoving mounts a lot though! Breeding and upgrading mounts have been a lot of fun and a nice grind. I would somewhat compare it to the proffessions update, another thing thats useful and you can grind! ❤️