No argument there. And it isn't difficult to make the argument that he hasn't significantly upgraded the OL, QB, or RB positions in three years.
WR seems to be trending positively; I like the potential of youngsters like Kobena / Hale / Foster, and I'm pleased that West / Lemon / Graham all seem improved and will all return next year. Not saying that the WR corps is where it needs to be yet 100%, just that it seems to be headed there.
TE has some potential, with Stevens / Wales / Adazzio returning next season, and Paris coming in.
But I'm tremendously concerned about the future of the QB position. I really hope that Hunt pans out [or Kinder or Broyld] as a dual threat QB capable of taking over for Nassib in a couple of seasons.
I'm nervous about RB after this season with Bailey graduating.
And I'm discouraged that three years into his tenure, Marrone still can't field a competent OL unit.
I'm excited about recruiting and the players we're bringing in, but we still have some glaring holes and units that don't inspire confidence.