OK, I'm coming up with this mock with the idea that the Steelers trade back to late 1st/early 2nd to get an extra third-round pick. Also that they ship Suishi for a 6th rounder. Don't know if either of those scenarios is likely, but it's kind of a fun way to dream...
1) CB Kendall Fuller, VaTech -- Steelers get help they really need on the outside in the d-backfield
2) WR/RS Braxton Miller, tOSU -- dynamic player that gives O another weapon and immediately improves return game
3) OLB Noah Spence, E. Kentucky -- falls because of character concerns, but Colbert does his homework and is convinced he's worth rolling the dice on with pick acquired in trade (wouldn't want to see them take this guy if they're not convinced he has gotten past his "issues")
3) FS DeAndre Houston-Carson, William & Mary -- Steelers grab a FS, enabling them to move Mitchell to SS
4) DE Azia ****tu, Stanford -- rotational player to spell Tuitt and Heyward; gives Planet Steelers posters fits because board won't let them type in his last name
6) QB Cody Kessler, USC -- to compete with Landry Jones for backup position
7) OT Alex Lewis, Nebraska
7) TE Kyle Carter, Penn St.
FREE AGENCY--Sign DT Damon Harrison (thanks Slapstick). Looks like Mike Adams won't be a FA because of an obscure injury clause; Steelers bring him back along with: Beachum, Foster, Gay, Golden, McLendon, S. Spence, Warren, and Todman.
1) CB Kendall Fuller, VaTech -- Steelers get help they really need on the outside in the d-backfield
2) WR/RS Braxton Miller, tOSU -- dynamic player that gives O another weapon and immediately improves return game
3) OLB Noah Spence, E. Kentucky -- falls because of character concerns, but Colbert does his homework and is convinced he's worth rolling the dice on with pick acquired in trade (wouldn't want to see them take this guy if they're not convinced he has gotten past his "issues")
3) FS DeAndre Houston-Carson, William & Mary -- Steelers grab a FS, enabling them to move Mitchell to SS
4) DE Azia ****tu, Stanford -- rotational player to spell Tuitt and Heyward; gives Planet Steelers posters fits because board won't let them type in his last name
6) QB Cody Kessler, USC -- to compete with Landry Jones for backup position
7) OT Alex Lewis, Nebraska
7) TE Kyle Carter, Penn St.
FREE AGENCY--Sign DT Damon Harrison (thanks Slapstick). Looks like Mike Adams won't be a FA because of an obscure injury clause; Steelers bring him back along with: Beachum, Foster, Gay, Golden, McLendon, S. Spence, Warren, and Todman.

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