The Cleveland Browns defense should have difference-makers on the defensive line and in the secondary, at minimum.
Myles Garrett, seemingly Olivier Vernon, if he stays healthy, Adrian Clayborn and Chad Thomas should be a productive defensive group. Andrew Billings should also be a quality addition as a run-stopper, too, and should fortify the interior defensive line rotation.
In the back end, Denzel Ward, Greedy Williams, Kevin Johnson, and/or Terrance Mitchell, if he's mostly healthy, should be a good cornerback group, too. And hopefully, Ward, Williams, and Johnson, in particular, are often used in the press man variety.