I wouldn't be surprised to see some 4-4 lineups in Wiliams nickle scheme variations.
Williams basically runs his own custom version of the paul roman Defense.
One things is for sure the entire defense is now athletic and and aggressive.
All the defensive guys drafted had a propensity to freelance and ave great ball instincts.
Jabril can be moved all over the place and is versatility may be used to help disguise coverages.
Also the Browns can blitz from anywhere.
some people might not be familiar with the 4-4
Outside linebackers[edit]
As there are two inside linebackers, there are also two outside linebackers. These outside backers can be described generically as the Sam and Will positions. The Sam linebacker typically sticks to the strong side, often outside the strong side defensive end, and has substantial pass coverage responsibilities.
[11] The Will position will generally play on the weak side. However, the Will can be moved to just about anywhere to better suit the defensive call or adjustment.
[2] Depending on the call and the personnel in place, Will’s job could be purely to get after the quarterback, play at linebacker depth, or to drop into coverage.
The nature of the defense requires a great deal of athleticism from these positions. Roman describes the Sam as the most difficult linebacking position to fill in his defense, and describes the Will as a strong safety type. In the defenses of Virginia Tech, Sam is compared to a cornerback, and Will to a free safety, in terms of the personnel types preferred for this role.
[2]
Here is an excellent article by Jonathan Stephens from January
http://www.scout.com/nfl/browns/story/1749375-x-s-o-s-the-hybrid-defender