I recall reading an article about a decade back that there is a pretty bad track record for teams who (i) play 4+ games and (ii) finish on Sunday
Obviously if you are on the bubble, keep winning. I can't imagine seeding is going to change for any of these teams now, particularly because the committee doesn't factor in the championship game. Maybe for Michigan, winning one more could get them to a 4?
I don't think anyone is saying to tank, but I'd rather be 100% going into next week than winning a tournament that I put about on par with the Battle 4 Atlantis