Here is my take on improving the Playoff,
There are 5 Power conferences and 5 Non. Make it a 10 team playoff with the conference winners getting in, everyone else is left out. Simple as that, if you win your conference then you are in, if not then better luck next year. Now since 2 teams would essentially need a bye, 1 power 5 and 1 non would get a bye every year (so once every 5 years each conference would end up with 1.)
To figure out who would get a bye, gather up the commissioners from each conference to roll a dice. (easiest way). Do this for seeding as well, make 1 Power 5 play a non power.
Independents would need to pick a conference or miss out on the playoffs