Looks like the plan is for a 28 team bracket in 2023.
Top 4 seed will be even more important for the first round bye.

https://herosports.com/fcs-football-...xpansion-bzbz/

When reports came out in 2021 of a push for playoff expansion, the original number of teams was 32 with no first-round byes. That has since changed to 28 teams.

Wistrcill said in his model, there would still be eight seeds. The top four seeds would get a first-round bye, and seeds 5-8 would have a guaranteed home game in the first round. The calendar would remain the same, as would other elements of the playoffs, like the regionalization/bidding process/etc.