I think that both Marcus and Jon Jones are best at slot receiver.
Marcus is also a top NFL punt returner.
Many of us believe that the weakest position on the Defense is the corner position opposite Gonzo. The slot is fine with Jones and Jones.
Obviously, one corner position is fine with Gonzo.
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We need at least two outside corners in addition to Gonzo. We have Bolden, Austin, Wilson, Wade and Hearn. That's a lot of bodies. But, is there a solid starter and a solid backup or two in the bunch?
Personally, I think that we might have a couple of future solid players. For me, for now, I would feel much better if we signed Gilmore or another veteran corner. So, while we develop 2 prospects, we'd have a top secondary, not one with a big hole.