I think Spaeth is a Steeler lifer now. We might make a change at #3 TE but that's about it.
In all honesty, I don't see much changes on the offensive side of the ball this off-season. The offensive line is set. Adams will continue to be the swing tackle backup. We might add depth if value becomes available in the draft. The WR's seem pretty set. Moore is under contract and has almost a $1.9 million cap hit but when Wheaton and Bryant on the cheap, it's certainly not breaking the bank for veteran depth.
We need a backup running back. So a $1.5 to $2 million option in lieu of Blount should be readily available (running back FA markets are normally pretty fat with option). Will Johnson is a RFA so a nice long term deal seems kind of guaranteed at FB.
All the changes will be on defense. Cam Thomas might not make it and another veteran brought it. We need to decide on the ROLB spot and our backup swing OLB is a FA and it's 99% sure Harrison is done so OLB is a huge need position for us BEFORE the draft. But inside looks solid with Timmons, Shazier, Williams and Spence all under contract. The secondary is a mess depth wise and that's where most of the changes in names will take place.
But other than that, the team MIGHT, and I say that skeptically, MIGHT have an opportunity to really improve their depth because we don't have that many holes. To say the entire offensive starters and primary backups will be the same in 2015 is not out of the question. So it's an opportunity to really invest in some defensive depth both with mid-level FA's and draft choices.