I Think that is WAY to low of a grad for Pioli. In fact I think that Pioli is doing a good to very good job. Yes he has made mistakes along the way show me a Gm that hasn't. Haley I think can be considered as one of those mistakes but lets look at some of the moves.
Cassel I grant way to much was given up for him. And way to much money was given to him. But he has not been worthless. He did some good things. Is his time as the QB over we will have to see I give this one a C-
Drafting. We can all talk about Tyson Jackson. I think the value we got for a top 5 pick from him has been on the low end of what to expect but there have been more picks then this one.
To look at a few
Dexter Mccluster The guy put up a very solid year. Made a number of plays. Accounted for over 800 yards between rushing and as a WR. Very solid
Javier Arenas was 3rd in returns. Needs to get better in coverage but has not been awful hes made some plays. Don't think you can say that he's a great pick but also don't think you can say he's been a mistake
Justin Houston Slow start missed a off season due to the lockout witch probley had something to do with that slow start but by the end of the year he was making things happen. He was along with Hali getting pressure on the QBs. I think he was a good pick so far hope to only see him get better.
All in all when judgeing a GM after 3 season the question you have to ask is this team better then they were before Pioli took over. YES I don't think that many people can debate that. When you look at a divison title and in a year that was just not normal for anyone this team playing a 1st place schedule with a team that lost a number of there key parts coming close to winning a 2nd AFC west crown. Pioli is part of the good and the bad. Right now I think the good is far more then the bad. If he gets the next coach right this team can do great things. Things that we have not seen this team do in a LONG LONG time. Pioli is doing far better then a D- IMO