Nebraska got hurt, when they left the Big 12 and came to the B1G, since the Big 12 footprint was their primary recruiting area. When they left the Big 12, the kids they normally recruited successfully, seemed to lose interest in the Huskers, since they were no longer playing TX & OK regularly. After years of "on the field" futility, that interest has decreased even more. There's not enough talent in Nebraska to make the Huskers relevant. If the B1G were playing Survivor, I believe NE would get voted off the island and RU probably wouldn't be far behind. RU is in the NY Metropolitan area, but very few people really care about RU sports.
USC & UCLA won't have that problem, since they do the bulk of their recruiting in SoCal. FSU wouldn't lose a beat recruiting Florida, if they joined the B1G. ND recruits nationally, so I doubt there would be any negative impact on their recruiting. I believe OR & UW do the bulk of their recruiting on the West Coast, so I wonder how much negative impact there would be, since USC & UCLA would already be in the B1G?
I think Nebraska was just an odd situation, where we thought the Name was a National Brand and found out, after the fact that they weren't capable of recruiting nationally. I don't think any of the teams that we're currently considering, are out in the middle of nowhere, like NE is.
I doubt that it really took a Herculean effort to get USC & UCLA. I suspect that both schools recognized that they had deck chairs on the Titanic and they initiated contact with the B1G, because they wanted to be in a stable Conference and get the Big Bucks. They made a smart business decision and fortunately, Warren didn't screw it up. For some reason, I believe that Delaney may have planted that seed with USC & UCLA...