Or you would see new rotations built the month it goes in to effect that are 6 hours block, 4:45 block, 5 block for 15:45 pay. The rotations will change based on the rules in place at the time they are built. Remember the changes that happened when FAR 117 went into effect? I would expect any amount of daily guarantee to also have an impact.

I kind of like the trips with 7 hours block day 1, long layover on day 2 and 7 hours on day 3. They are especially nice when they are hometown layovers. A daily guarantee would make them all but disappear.