This thought came to mind the other day when looking at Phorex. It used to have a rendering swap-in but then had it removed. Of course, rendering swaps-ins aren't precisely excellent nowadays, with so many creatures having effects on escape, counterattacks, and rend resistances. Still, it makes you wonder if the meta has surpassed a creature's old height in the pvp meta; why don't they revert old buffs to see how it affects them now?