It doesn't take a non-Hawks fan to see the flaws. They keep Bevell, they'll inevitably run into the same problems. They keep Bevell and lock up Lynch, Lynch will come with a hefty price, which means less for Wilson, which means you risk Wilson bolting (good luck replacing that with a scrub you have on the team that you expect to trade for a Cutler with a straight face). They somehow keep all three, that cap's shrunk, and you need receivers and OL.
You somehow get all of that solved, and you'll still have to deal with the potential of Wilson not being great. For as many great passes he threw in the playoffs, he threw at least as many terrible ones. But all of that's moot if they lose Lynch, because then they're fucked. Too much needs to happen for anybody to reliably say right now that team is winning it all in 2016.