I agree with mounts, if by that you mean they took too long to get you across a map. Flying mounts move faster when flying, but even then they feel too slow when i need to to get from one end of a map to the other end. Like when i need to do some gathering in the sea of cloud.

I don't understand what you are saying about everything else. I don't see what's wrong with sukuchi or sprint (neither feel or look sluggish to me), or what you mean by appealing or not in this regards. Maybe give more examples about what you think is unappealing and in what way you think it can be made more appealing?