I think the issue I have with getting Jennings for Johnson is that the Packers have so many more options to throw to so they don't need to force feed Jennings the ball.
As far as Moreno is concerned don't really need him since I've got Michael Turner, Clinton Portis, Ryan Grant, and Shonn Greene.
I've got a counteroffer in mind that I'm thinking about making, but I'm not 100% sure of if I want to deal away a stud like that.