Sunset, I have been nothing but courteous to your point of view, so there is no need to get hot under the collar. Ohio State and Michigan have great interest in expanding the Big Ten this round and in the future since more teams equal more money if they are chosen for a reason that increases the Big Ten brand and revenues. You cannot point to generalizations of money and greed and win a discussion with me. I'm sorry, but it doesn't work that way. Use your brain and resources to come up with a scenario in which 10 or 20 years from now a Michigan or Ohio State decides to make a move that would endanger Iowa's ability to remain in a BCS-level conference. I'm not saying a scenario doesn't exist, I just haven't been given a plausible one yet that gives me pause for concern.
First of all, the Big Ten requires a 75% vote to make any changes to the conference. No matter how many new teams come into the conference that percentage will not change. That means that a pretty big contingent of universities would have to come together to discharge a member. I just don't see this being a realistic scenario, since this isn't even what is happening in the Big 12. In the current conference realignment scenario, no one is kicking out ISU, KSU or Kansas, instead they are being left behind as other universities leave for new conferences.
If you and I can agree that the Big Ten won't have the power and will never remove Iowa, then the only way Iowa gets into danger is if the Big Ten disbands. Under what circumstances would the Big Ten disband? Too often it is forgotten that the Big Ten wasn't formed and still doesn't exist solely as an athletic conference. Instead of an athletic marriage of convenience (ex: Texas and the Big 8), the Big 10 conference has partnerships and collaborations in research that greatly dwarf athletics. Keep in mind that the Big Ten discharged $6 billion dollars worth of research expenditures last year where as the athletic departments budgets totaled approximately $0.9 billion. Research is 7 times the dollars of athletics. Of course, athletics is still very important to the Big Ten, but money is king and the money is in academic research. The Big Ten will want to keep it research collaboration structure (Committee on Institutional Cooperation) and subsequently its conference even if Michigan, Ohio State, Penn State or all 3 left for greener pastures. Even though I don't see why they would leave since the other options (ACC and SEC) don't offer the academic collaborations they get from being in the Big Ten.
So I look forward to hearing some scenarios you can come up with.
Also, I have faith in a lot of things, but the tooth fairy is not one of them.