Again, the ideal model is:
1. 4 Super-power (SP) conferences of the top 64 programs, max, organized regionally, broken into divisions
2. None of these can play any teams outside the 4 SP conferences
3. Networks bid on covering the games of these conferences, similar to AFC/NFC in the NFL
4. Intra-division/conference games are shown on "its" network main channel, broken out in regions. There would be other games on the obscure sub-channels for each network, or PPV package of some kind to get all of them, like the NFL Ticket. Inter-conference, handle much like today: Game is broadcast on the road team's conference network.
5. Did I mention that these teams can ONLY play other Super Power conference teams? No more YSU or Akron ... or maybe Pitt, if Pitt isn't good enough to be included(right now, it would be dubious, frankly).
6. What about those that can't make it into a SP conference originally? Doomed to drop the sport? Perhaps many should drop it, frankly. Others can continue playing at 1-AA level, or perhaps a new tier of D1. Networks can even strike deals to show games from those levels, like NIT games on ESPN2, etc.
7. Want to give an avenue for 1-AA/lower tier to rise to the SP level (at the expense of bottom level performers that would drop down)? Kind of like European soccer leagues? I'm fine with that too. Conduct a re-eval of the SP conference make-up every 3 or 5 years. That would force a perennial knuckledragger like, well, Pitt to invest adequately and compete hard. And give a quality lower-tier like Toledo or ECU hope that their high quality could pay off.
8. If you want to have a preseason game or two as well, to ward off one of the other oft-mentioned reasons there are 1-AA games, I'm not averse to that either. I wouldn't see schools wanting to give up regular season or playoff games for that, though. Probably would have to be informal scrimmages during August.
9. I'll leave the length of season, regular season scheduling, and length/set up of the playoff for others to debate.
10. But this would definitely solve all the problems we face today: no more awful games, networks not willing (or able) to gain access to show them, and real, professional coverage for all who want them.