Morris learning the nuances to the D is not the same as a less experienced coach learning them.
Besides, we also shouldn't think that Staley's D was near perfection or that it was called to near perfection (my words). Point being, Morris brings a lot to the table.... while admitting that Staley was pretty innovating and it's hard to knock running the #1 D. Although he certainly had the horses to do it.
This is why I'm not worried, but more curious, to see what he does and how it goes. It won't go badly, and he's not going to make bonehead mistakes. You can bet that McVay is firmly in control and told Morris what he wants before he was hired. My ONE concern is if he's prepared to be as multi and complex as Staley was on game day. Not because he can't, but because it might not be his instinct because he might not believe in it as much as Staley does.
As for Jourdan's comments; I'd take that with a huge lump of salt. Morris is not going to show his hand to a reporter who was quick to report. He can say whatever he wants right now; what he does when the bullets start to fly is another thing. Jourdan is also savvy enough when she's at open Training camp practices to understand what the D is doing, and what they are emphasizing. So, in another month we'll start to get a fair picture of it.