Capers and Trgo both told me they like versatility and the ability to play multiple fronts and looks with the exact same personnel on the field. For example, Peppers and Perry can play DE or OLB. But honestly, mostly these two look silly dropping into coverage, even though Peppers made a play or two there. They do get too cute with the zone blitz looks sometimes, but really, the problem is more personnel than scheme. Packers have some good solid players, but very little exceptionalism. That's why Peppers stood out so much. Because when he was on, he could make athletic plays, get that strip/sack recovery, get that INT. Clay used to be able to do that, but it appears that's mostly gone. Perry is great against the run, and can generate some pressure, but he needs help to really stand out routinely.
The article Maxi posted suggested man coverage. Man or Zone, if this defense can't generate pressure, they are going to continue to get shredded by crossing patterns.