We discoverred you can't really rotate like we wanted. Whoever takes you up to the specified floor both uses tokens and gets it recorded on their disk. So, if one person is recording on a disk, as soon as you fail a couple times, you start from floor 1 again to farm coins and/or clears.
I guess what sucks about this is - if you get on damn hard floors for 3ish runs, you go back to the beginning for at least one run until you have enough tokens. If only one person can record your progress, why don't they get more tokens?
Yea, you can pick up a 6th that hasn't gotten clears if your 6th quits, but if your leader quits, you are totally screwed and have to start from the beginning again. Not sure whats worse.
So far I like this asault. Its different, yet not nearly impossible. Yet. My group has been using every tag they have for this, and have yet to see anything good drop from it though.
XI Wiki

