It appears ESPN draft analyst Todd McShay is starting to feel the same way.
McShay's most recent mock draft has the Steelers taking Virginia Tech's Fuller, addressing the team's biggest need with an outstanding all-around player. He goes after Darqueze Dennard (11th) but before Justin Gilbert (22nd).
I don't think the Steelers have to go with a cornerback here, but it's definitely a need position. The three players it came down to for me were Fuller, Justin Gilbert and C.J. Mosley. Mosley could be a fit, but I think the durability concerns will probably lead to him falling a little. I'm sure they'd love to have Gilbert's playmaking ability, but they've always gone for more physical corners like Fuller over guys like Gilbert who don't get up and press and are poor tacklers. If they can find a way to trade back and add extra picks, that'd be a good move; they could get similar value to Fuller six or so spots down the board.
We agree, the Steelers aren't required to draft a cornerback with the 15th spot. They'd be best served by trading down, if they could locate a willing partner, and taking Fuller a bit later. Odds are good he'll be available somewhere in the 20s, and adding another third round pick would be ideal. The Steelers draft at 15 and 46, but don't draft again until 97.
Fuller is a solid cornerback though and could be used as a dimeback his rookie season, working toward competing fully for a starting spot in 2015.