I get what you're saying but I'm not sure there'll be a corner at 28 they like enough to pick over someone like Peppers/Baker or even Obi if they are still available.
I'm thinking from the angle of what it's in the cupboard already and who could be there at 28 that will be able to fit/help right away, which in turn will effect the way they run coverage. There's three corners, a safety and a guy that can play both on the roster currently. Rod can essentially start from scratch reshaping the secondary how he likes in this draft. They can pick a guy like Baker/Obi to play the deep middle and keep Jones as the down safety if they want to run a Cover 3 shell. They could take someone like Peppers and slot him as a Nickel safety and shift Jones over top with Heath to help the corners. There's definitely a few directions they can go in but I am just speculating since I don't know exactly what the plan is.
Appreciate the discussion though. I could theorize about this stuff for days