As we all know, even in speed run not all DD have enough damage to kill the wall, much less without LB. Hell, even accident happen to expert Originally, even if lb is lose, there is a chance of pulling some mob to get lb again. Now they must one shot it, of not the instance is lose. This will force people to group with the very best gear people as to not to waste time. SE plan to help new people just backfire 100 fold.