+1 to leaving the primal mount drop system AS IS. All mounts have the same movement speed, none of the primal mounts have special abilities that put anyone to any advantage or disadvantage.
If you must have one, farm for it. I desperately wanted one and ran X primals enough that one dropped and I won it (after seeing 4 drop and losing roll).
I have to accept other things in the game that I don't have because I don't do it (The Hunt), so should everyone else. Thankfully not ALL content in this game is whack the piñata and get all the shiny things like The Hunt, I hope it stays that way.