One of the biggest reasons that I would like to see the Steelers select Still is because he grew up a Steelers fan—even though that may not seem like a lot to most teams, I can only imagine what it would be like to be drafted by the Steelers.
Unfortunately, the reasons to draft Still end there.
For starters, Still is listed at 6'5", 303 pounds. In the 3-4 defense, that would make him a defensive end. Ziggy Hood is listed at 6'3", 300 pounds, and Cameron Heyward is 6'5", 288.
Still would make a great 3-4 DE for the Steelers, but having used their first-round selection in two of the last three years on a DE, drafting one that early this year simply wouldn't make sense.
I have stated for the last few years that it could be possible—once Dick LeBeau retires, which will most likely come at the end of the 2012 season (they had to promise Keith Butler something)—for the Steelers to switch to a 4-3 base defense.
Tomlin understands that there's no way he could change the Steelers defense while LeBeau is around, but once he is gone, it would not surprise me even a little bit if the Steelers were to make the switch.
Even so, to draft a player for depth instead of taking someone like an offensive guard would not help the Steelers this year, or in the next few.
In a nutshell, Still simply does not have the size required to play the position the Steelers would be drafting him at, and that really won't work for anyone.