A job as a 4-3 DE would allow him to showcase his strength of setting the edge more regularity and rarely ask him to drop into coverage masking one of his biggest deficiencies. My point was that a 4-3 isn't going to make him any better of a pass rusher though and that's really the only way he can "fit" in any scheme as more than a backup and certainly the only way he could be worth a 1st round draft pick. Shawne Merriman would have benefited from a 4-3 in the exact same ways as Perry but nobody cared about fit because you take elite pass rushers in any mold you can find them.