Quote Originally Posted by Zephyranthes View Post
DF will make it faster for content to get "old". They want to extend their life as much as possible.
Its more. Yoshida said some time ago, that forming a fixed group, make friends and so on is one part of raiding in his eyes. The requirement of meeting at the entrance (or at least to be in the same area with the entrance) underlines his point of view. Between the floors, you get together in a separate room, where you can meet other people, before you start over into the next turn.