Some of your suggestions caused me to think. ??? Fortunately, I am not a Liberal, so no harm was done. ;)
Your idea for a FB NIT for the non BcS schools is halfway to my idea of a division 1B. While not a radical as 1B, it would probably attract the same flack from those schools who would fear being pushed into 1B. To sell it, you might start with simply allowing champions of conferences that do NOT have a playoof game to play 2 bowl games. This could have a pyramid affect.
1. Ideally, it would lead to the non BCS conferences(1Ab) playing the BCS conferences(1Aa) with an at large bid for any 1Ab winner. However, the BCS conferences would not like that since a loss would deminish their BCS standing.
2. That could lead to some BCS conferences expand to 12. IF, and its a BIG IF, they took the best of the non BCS schools, that would be a reform. The differences between 1Aa and 1Ab would be great enough to silence the 1Ab's. That could lead to your 1Ab playoff.
3. Unfortunately, the likely scenerio would be for the MWC and C-USA to play each other and try to demand a BCS at large bid for the winner. I am not convienced that they would deserve it!
The theme for this thread is seemingly small changes, that will lead to the bigger changes, that most of the posters on this site want. Because of option 3, my idea may not lead to your idea. Both are aimed at an eventual playoff. Perhaps together we (as a group)can come up with some way to get there.