It took me days to vote on this. I was a huge Sammy fan, despite his oft-injured status. I still see him as easily the best WR talent the Bills have had since Moulds and, more likely, Andre. It's tough to see him leave based on that and what he was acquired for.
Darby was a loss, but you have to see that a defensive HC is going to need guys that fit his scheme and Darby was not one. A talent? Absolutely.
I voted yes in the end. This team needs an influx of young talent and shaping the draft with two picks in each of the first three rounds does that and gives them immense flexibility to acquire top tier talent. They weren't going to re-sign Sammy by all accounts and the SB is a pipe dream this season. Building for the future is the intelligent path.