That's an option - although I'm not sure how rules work for rearranging 11/12 line from "true seeding," but priorities may be more relaxed to facilitate that type of situation.
I'm not quite clear with what
@mctallerton is asking or assuming, but perhaps I read it too quickly. How would the 6/11 (and by extension, the First Four) be locked into a Thursday regional placement, at least as it pertains to ISU/Baylor 2/3 seed swap?
I assume they can shift an 11 first-four out of true seed alignment to accommodate Th/F.
To reiterate, perhaps I'm misunderstanding the original question.