So let me ask you: Would you rather have had the SEC's old rotation when OU was in the Big 12 with Nebraska and Colorado? This would've meant having one cross-division game locked in every year, in OU's case let's assume it would've been Nebraska. The trade-off for playing Nebraska every year would've been that OU played all the other North teams home and away over a 5 year period instead of a 4 year period.
Would you have made that tradeoff to keep Nebraska annual? Or would you prefer what y'all had, with all six cross-division teams rotating on and off the schedule every 4 years? . . .
I had a long MB discussion about this with the late, great Hooky Hornstein. I figured out a 5-year cycle (probably just like the one you mentioned) and it would have worked fine. The problem was that nobody but Nebraska was particularly interested in keeping OU-Nebraska an annual affair. Texas didn't want a permanent inter-divisional opponent and, I'm sad to say, neither did OU. Nebraska was kicking Sooner butt at the time, and the short-sighted PTBs at OU took the easy way out and went along with Texas' PoV.
Nebraska, at the pinnacle of its on-field excellence, was the odd man out when the Big 12 was organized. There were several 11-1 decisions that went against the Huskers. The big one was probably the ban on playing partial qualifiers. Would we have had permanent inter-division rivals had OU sided with Nebraska? Maybe, but I think probably not.
To answer your question, had I been king of the Big 12 at its founding, I would have mandated that OU-Nebraska be an annual game. Even if it had to be an OOC game half the time. I would have told the weenies at OU to suck it up and put better teams on the field, because we're not going to drop the annual battle of the Big Reds.
OU fans 20 years or more younger than I am just remember the butt-kickings if they remember anything about OU-NU at all. They don't care one way or the other about the future OOC series with Nebraska that we have coming up in 2029-30. But I do care. I'm looking forward to it. Maybe I can run into Fearless again.