Meh to me, as i stated before, blizzard could add reskins of this mount, a few of them at least, but keep the original skin with the auction vendors unique to the original skin, and remove the ah vendors on the reskins of the brutosaur.
This gives those players who had the original brutosaur a bragging rights, like i have an original color brutosaur with ah vendors on it. I don’t think that the whole mount itself should be part of the prestige, but that is just me. At the same time, i do understand the prestige, but this model looks pretty ugly if you ask me. But alot of peeps are bummed at not being able to get a ridable giant brutosaur mount at the same time. It is what it is for me, but I understand where both sides are coming from. I think the other biggest problem is no one had any time to prepare. For example, we were told in wrath that the glory of nax achieves were shortlived and would be removed in the ulduar patch. At least we knew that from day one. This whole mount, including the skin, is being removed about a year into bfa, with no deductive reasoning for it. Would have been nice to have a plan around it for those that really wanted it.