If the Vols sign around 14 4* or higher (Rivals) recruits in 2016 and there are no defections from 2015 (there will be, but just go with me on this), there will be 44 4* or higher players on the roster during the 2016 season.
2 from 2012 (Croom and O'Brien), 3 from 2013 (JRM, North, and Austin Sanders), 8 from 2014, 17 from 2015, 14 from 2016. Butch will also have signed 54 4* or better players through 4 classes (counting JUCO graduates and transfers/dismissals) despite the 2013 class being relatively lackluster in comparison to his next three.
The best part about that is that I expect the number of 4*s from 2016-2019 to be significantly higher. Could definitely reach 70 or more, IMO.