To see how a new development might affect the future, take a look at how it would have affected the past. That's a go-to of mine -- see: how larger playoffs would have worked in 2020 or how a much bigger, earlier playoff would have affected things -- and with the long-awaited news that we will be moving toward a 12-team playoff in 2026, we have a reason to dip into that well once more.
I had never really paid much attention to a 12-team format until it arose as an option last summer.