It is worrying, any new player coming to the game, will have lab and tower to get through, then when the next part is added, it will be nigh on impossible for any new player to progress to it, because let's face it, very few will run lab when a third raid is added, and the ST gear will be ignored this making that ignored too, so players coming to the game will be stuck not being able to progress
Last night I queued on an alt that actually needs lab to continue, was in queue for 2hrs before giving up.