Honestly, who cares what they do? The Big10(us) has been playing an 8 game conference schedule with 4 non-conference games while having 11 teams. The new Big12(10) will more than likely play 8 conference games and still keep 4 non-conference games on their schedule - this is the norm across the country.
Now the Big12(10) has 3 teams that share the lions portion of the money (TX, A&M and OK). This really shouldn't change or shift the power of the conference as two of those three have been dominating the conference for years. The $ will probably help improve their non-revenue generating sports a little bit.
In the end the Big10 added a team that makes sense geographically and academically. We will probably continue expansion in the near future but I'm sure the selection process will be very specific - ND or equivalent. In adding Nebraska we gained a team that is once again on the rise in football. This can do nothing but help the exposure of the Big10(12). This should help recruiting.