64 to 48 seems like a fair compromise. I don't see why any team should have a last week BYE so hopefully that changes going forward.
If I am not mistaken a conference that has an uneven number of teams then each week a team will have a bye during conference play. Depending on how the team works out their schedule they may not have a game the last week of the season.
With 48 teams in the playoffs 64% of the schools make the postseason. 32 is 43%. I thought going to four rounds would have been a good move, also. More teams get to participate so that is good although in some instances it may not be real good.