Little Blue, how many people does it take to pull off this shift pattern?
Maybe it's a US thing, but not many people here like rotating shifts if they can avoid them. You don't see anybody working 2 days 2 nights 4 off, it is 4 days (or nights) on, 4 off is standard for many airlines.
I am aware of two airlines that work a 4 on (2200-0600L), 2 off, 4 on (1400-2200L), 2 off, 4 on (0600-1400L) 4 off which is really 5 off because you come back at 2200L on the 5th day.
I worked that schedule for 6 years. My last 3 years I traded my 0600-1400L for one of my colleagues 2200-0600L shift to eliminate one of those sleep schedule changes.