re: Gator fans, what is the leash for Mullen?

Yeah, his name was Muschamp and the vast majority of those players were on defense.

2016 NFL Draft:

Hargreaves (CB)
Neal (S)
Bullard (DE)
Morrison (LB)
McCallister (DE)

Kelvin Taylor (RB)
Robinson (WR)
McGee (TE)

5 - 3

2017 NFL Draft:

Davis (LB)
Maye (S)
Wilson (CB)
Tabor (CB)
Anzalone (LB)
Brantley (DT)
Ivie (DT)

David Sharpe (OL)

7 - 1

2018 NFL Draft:

Taven Bryan (DT)
Duke Dawson (CB)
Harris (S)
Townsend (P)

Callaway (WR)

4 - 1 (other than offense) Callaway was also removed from the team early and, ironically, entered his own regiment to prepare for the draft.

2019 NFL Draft:

Polite (DE)
CGJ (DB)
Vosean (LB)

Scarlett (RB)
Taylor (OL)

I think you guys are vastly overvaluing how much NFL talent was there that wasn't recruited by Will Muschamp.

19 - 7 defensive players drafted, the vast majority recruited by Muschamp (if not all, to be quite honest). If they were successful, it was not because of McElwain.