Having games the next week makes that difficult. If hosted in higher seeds home field, more likely to get people there. Have first round played 2 weeks after ccg.
2nd, bowls are money makers for the conferences. Taking the cfb out of the bowls, has
what effect(s)? - lower interest in other bowls? less revenue for the conferences? less chance for good teams to celebrate a good year by going to a bowl?
Will the gate from home games be shared with all cfb? who gets that revenue?
I think much of what you say has a lot of merit.
Move it to 16 teams no byes. Conference champs get to host first round