I hate neutral site games. Games should be played at the home stadium of the higher ranked team.
Then you're in luck with the expansion to 12 teams in 2024, seeds 5-8 will host seeds 9-12 either at their home stadium or another (nearby) stadium of their choice then the winners will play teams 1-4 in their home stadiums. The surviving four teams then go back to the pre-selected neutral sites. Most of this will probably be outside the structure of the bowl system other than possibly the national semi-finals.