I will be open to a tier not having a door boss and instead making the final boss have more interesting mechanics to make up for it. I think it would be nice if a tier play out like a dungeon where we have to fight our way to the boss much like they did in with the turns in ARR instead just spawning us on the boss floor. Yeah it seem like with this current raid tier they don't like the fact that tanks can just invul certain mechanics with out no consequence and I feel they should make more interesting mechanics that are more fun and engaging where we don't have to feel like we have cheese as much.