The big problem right now with speed running story instances is that the bosses can be initiated way before one or two people are even ready, or thus still in a cut scene. It creates a unjust way of forcing players through a dungeon, and possibly making them skip that said boss (which was my case in my first prea)

By locking out the boss until a cut scene is over, if players really want to speed run they can skip or burn the mobs to their hearts content, but can't bully you into forcing a fight you might not even get to be a part of. The large majority of bosses have very short cut scenes, its really just these two dungeons people have a issue with.

It should be understood that by queuing a story instance, YOU MAY HAVE TO SIT THROUGH SOMEONE WHO WANTS TO KNOW THE STORY.