My gripe about Livestock is that it doesn't automatically select mounts from only the fastest type you have available. When I hit the "smart mount" keybind, I want the fastest mount that I can use for the area I'm in. When I portal to SW, summoning a 60% land mount when I've got approximately 20 +100% land mounts is unacceptable. That's why it's a SMART mount button, dangit. If I have to tell the addon not to use slow mounts in a "smart" mounting addon, it's not a very "smart" mounting addon.
nearly all posts didn't fix your problem so i try...
I use a mod called "smartmount" and it is simply smart.
You get three "profiles" to choose from, each of may be binded to a unique binding (e.g. my regular stroke is shift+space while the second setup (my mechanohog) is shift+x)
You may choose the pool of mounts (and companion pets if you want so) to each set up.
In your demand and my example shift+space for max velocity (310% yayyay!) and shift+x for a random pool of ALL of your mounts (include 60% flying and or ground) or just the slo mounts...
hope you could understand my bad english though...
you find it at curse.
Captain Endriel and his fearsome crew!