Good point about Pelini's recruiting, and I agree. Nevertheless, I still hope Riley can get us out of that mid 20's range. I think he can if we start having solid seasons again.
Teams can have solid seasons with teams in the 20 to 25 range. Build your roster with consistency and depth, and then make sure you're solid at the line of scrimmage and QB. If you do that, then you can easily win 10+ games per year. Michigan State is a prime example.
However, Michigan State vs. Bama last season was a prime example of the differences between top 5 recruiting and top 25 recruiting in a playoff setting.