Ok, Ok, it's Christmas time...
I still think adding Penn State was the right move. The conference and the school have benefitted.
Academically, Penn State's programs have grown in quality and added to the overall academic strength of the conference. That helps both.
TV wise they have given the conference an entr?e to the East-of-Pittsburgh market that includes Philly and DC. Having been posted in DC prior to 1990 I can tell you that the TV and papers greatly expanded ALL Big 10 coverage once Penn State was a member. That's a huge market that Notre Dame, the ACC and Big East once owned all to themselves. No longer.
Football wise they give the conference a third 100K+ stadium, a well established history and a fan base that will go anywhere to watch their team play, i.e. given a choice between a PSU at 7 & 5 and a Pitt/Rutgers/Cincinnati/UConn/Syracuse/Wake Forest at 9 & 3 the bowl folks will pick PSU. That adds money to the Big 10/Ohio State coffers.
I can't/won't/wouldn't equate Tattoos to child molesting, but I think it's noteworthy that both schools lost revered coaches because the coaches failed to follow SOPs when confronted with issues that were problematic for the program and the school. Both schools are paying, and will continue to pay, for that lapse in judgment.