If I am Rivera, I argue for my job this way:
We have talent, but we have holes that Hurney never successfully addressed--DT, WR, CB, and OL are pretty significant aspects. Who is the last good linemen we brought in--Ryan Kalil? When did we last sign a qualitiy CB? Gamble? When did Marty Hurney EVER bring in a top WR? NEVER (Smith was here when he came aboard). DT? Corvey Irvin? Sione Fua? Terrell McLain? Ron Edwards? Louis Leonard? Tank Tyler? Frank Kearse? Undrafted FAs Neblett? Chandler?
I would add this: When the team sees the GM rewarding players with top contracts after underperforming and losing seasons, what motivates the others?
If I were RR, I would argue that Hurney's mess will take years to fix. Bad contracts that strapped the cap (DWill, Godfrey, Johnson, Beason, etc.) were all overpaid.
So, then I think JR asks, "How did those holes affect your ability to game manage, manage the clock, develop something that looks like and NFL 2 min drill, provide some discipline for the team, or win close games?
Hurney likely gone because he is responsible for RR. Wanted to see how Ron responded. No real change, this year looks like last year. I was hoping for more too.