I know you are interested devs so here is how one rides an otter, for reference.
I keep thinking there’s good reason they put the Brontosaurus month on the BMAH, like maybe in Shadow Lands there will be an even better AH mount?
I’m sorry to tell you, the reason they’re removing the Mighty Caravan Brutosaur is because they don’t want Auction House mounts to be common.
It seems highly unlikely there will ever be another AH mount available outside the BMAH.