I think he should be played in that nickle/star/woodson role is a very good question.
I've heard some rumors that the Packers want to take a look at Burnett playing there with Brice at SS.
It's hard for me to talk about Randall, because my recent memories of him are staying back and not mixing it up... I think because he was injured and making sure he didn't get beat over the top. Which slots guys have to worry about that a little less, because they normally have a guy over them. But since Randall was playing back, he let a lot of underneath stuff open, which is not what you want in a slot guy... but again, it might be unfair to judge him on that because of injury and protecting over the top.
I'm thinking House, Gunter and King are mainly outside guys... yes I know all three at some point have played inside roles (Gunter and King have both played Safety/slot some in college), but I think super quick slot guys would play into their weakness. Though Gunter against TEs does seem interesting to me for better physical/speed match-ups.
But I'm thinking Burnett, Randall and Rollins for the slot nickle position.
Though in general, watch out for Herb Waters!
Why? Because CB coach Joe Whitt Jr. said so!
Whitt compared Waters to Tramon Williams in general, with saying that he told reporters to watch out for Tramon, and he went from PS to starter in time... and now he's telling you to watch out for Herb!
Also because the Packers have good luck with CBs from Miami, even if Herb was a WR last year, he's now a CB and he came to the Packers from Miami. Also coach Witt has a history of turning former WRs into play makers... mostly in college, but Whitt helped Sam Shields (also from Miami).