I really don’t mind the changes that makes it hard/impossible to receive boosts from higher leveled characters. But with the additional abilities that monsters received feels like a sledge hammer solution, mainly because the average group could easily be affected by these changes, despite it being edge cases.
I for one would hate to wipe in a strat group because the mobs started to spam a stun on the tank because the accidentally overpulled and lost a dps or have monsters teleport because we have poor dps in shadow labs, but are able to control the mobs with aoe slows.
It should be able to find a solution that doesn’t affect the normal group of players, trying to clear the dungeon by normal means. I remember there was the same problems on SoM, where people showed frustration from the exact same changes.
Haven’t been there myself, but according to this article: https://www.wowhead.com/wotlk/news/new-anti-boosting-mechanics-from-enemies-inside-dungeons-on-burning-crusade-327973#comments
“Enemies are teleporting to Mages inside Shadow Labyrinth after being slowed and rooted a certain number of times.”, so it seems Shadow Labirynth boosting was hit too.