Setting aside for the moment the fact that you completely ignored the offensive line (only Long will be full-timing the same position as last year), are Burnett and Bush downgrades from Crowder and Ronnie?
If you only made two changes, and both of those changes were upgrades, didn't you upgrade your team, by definition?
Burnett an upgrade...YES
Bush, we will see. I want to see Bush stay healthy and play a full season before I call him an upgrade. Having a good half in a preseason game vs the NFL's worst team...nice but doesn't answer any questions about him. I hope he does great, but I am not calling it an upgrade