For our own group, I think the best thing to do is clear floors 1-21 again before we decide to move on with my disc, that way we won't be forced to do another 1-100 run to get everyone full access.
Personally, I'm much more happy with not losing full access for clearing the Floor 100 boss.
Personally, I'm much more happy with not losing full access for clearing the Floor 100 boss.