Transmog (which I dont want near Classic) could arguably add more positive things than the one negative thing most people say (“I can chose who to fight or not depending on gear”: - which nobody ever does anyway). Its all depending on the narrative.
- More dungeon groups and raids (due to people collecting looks)
- Variety in looks (“It doesnt hurt anybody”)
- Visible long lasting achivements of glory
- Goldsink
See how everything can fit a subjective narrative? Fortunatly Transmog, along with Barbershop, have no place in Classic.