I mean I get that placing him into a 24man raid would make sense but... the execution is rather typical SE-like - very uncreative.

He could easily appear randomly throughout the entire dungeon (maybe only shoot random aoe lazers during bossfights) or randomly replace one of the trash pulls with him. Heck even a 50% chance of him appearing would have been fine with me. They mentioned Dun Scaith would have different kind of layout than the rest of the raids they could have risked something new but played it safe... as usual