The principle criteria for determining SOS will be the number of P5 teams on your schedule.

BYU will not be able to keep pace with that at all.

Thus the ACC and SEC "controversy" about BYU. The issue was not about BYU, it was about their own self-preservation mindset about getting an ACC/SEC team into the playoffs.

The talk about P5's exclusively scheduling P5's is also about the CFP, and to a much lesser extent, the autonomy issue.