Hey Banjaa, just some new info if you feel or think it’s update worthy, they’re going with the old mount skill system, here’s proof below, time @ 3:22 mins in, i think.
https://old.reddit.com/r/classicwow/comments/bol46x/blizz_says_blood_plague_could_come_back_no/
As for O.G unarmored mounts as well here, thanks!
:Edit, it seems if you had the O.G Collector edition tied to your account you’ll have the pets, with you as well in classic.