Not everyone can play at Alabama, Clemson, and Ohio State. Also, getting those underrated players that are really talented is something these teams can do. Missouri won the SEC East beating Georgia and Florida with 3 star talent. Wisconsin wins 10-11 games win 3 star talent.
The problem with stars is it mostly measures physical ability and not necessarily mental ability. I know this because Tennessee gets these great stars that end up underperforming all of the time because they don't have the football smarts.
Nebraska has a big enough name that if they can get back to winning 9 games and perhaps winning the B1G East (they really just need to beat out Iowa, Northwestern and Wisconsin), they would be able to sell themselves as a top program.
15 years ago, we weren't even talking about Alabama and Clemson (pre-Saban and pre-Swinney). USC Trojans, LSU, Florida State, Florida, Texas, and Oklahoma were in the mix. With time, things change. Nebraska needs to start climbing the conference pecking order. It wouldn't be that hard for Nebraska to start to beat out its rivals in the B1G West. None of them are recruiting 5 stars anyways.
I told people that Tennessee with Pruitt needed to get back to at least finishing in top 3 in SEC East to get competitive again over his first 2-3 seasons. Last Season (and this season) he has done that. He is beating Missouri, South Carolina, Vandy, and Kentucky. Next step is perhaps Florida and then finally Georgia. It hurts Pruitt that Florida and Georgia hired solid coaches in 2016-2017 and both are fielding top 10 teams again. Put Pruitt back in 2014/2015 when Butch Jones started to get talent, Pruitt probably would win the SEC East. (All Jones had to do in 2016 was beat South Carolina and Vandy to win the East and he blew it).