Removing Haste Aura from Fast Monsters

I'm concerned about what this removal will result in, and I hope it doesn't remove the haste aura modifier from beasts.

Otherwise, this will result in legacy companions that have a mod they can no longer get, and an unfair advantage to those who got their beasts early.

I believe a solution to this would be to have the aura enabled on the affected beasts but provide no effect until it becomes a companion (if beasts are included in the changes).

A that's unlikely, B it won't matter in next league, C the change itself means very little because it being an aura it can just apply on a slow monster near fast monsters and suddenly you have the same issue again.