No offense, because I think you're one of the better posters on here, but the offense would have to take one huge step up from the sh-- they've produced lately bottom half in every statistical catagory the past few seaso passing and rushing and points scored, redzone offense, plays over 40 yards I believe we were 31st in the catagory behind only oakland.
As far as Kelsay and Denney go. They're a nice 1-2 rotational duo. However I'd expect a little bit more then 29 career sacks and 10 years worth of nfl experience between them to offset the loss of again someone who is arguably a top 5 corner. Ryan Denney will be 30 in June expecting him to improve much beyond what he's produced thus far is questionable. I think the biggest asset denney gives is his size.
Kelsay meanwhile has improved every season so far, but no one will mistake him for any of the pass rushers of other cover 2 teams, and as much as you and some of the other posters may like the trio the only legit pass rushing threat remains schobel. No one fears kelsay/denney the way they probably do robert mathis, or alex brown/mark anderson. Adding a legit pass rusher should definitely not be overlooked just because we re-signed kelsay, and neither should it be over looked the talent we're losing in Nate.