I understand what your line of thinking is but a 1st rounder as a back up who may or may not get on the field? Couldn't you utilize that first round pick in a better way and draft someone in rounds 2-4 to back them up? The Steelers plan right now is two 2nd rounders on the outside. If Worilds "Booms" like the FO drafted him to when Harrison left...You need depth behind them. You could get quality immediate depth-starter-star in rounds 2-4 if you don't have urgency to get him on the field.
I would be all for drafting Jones or any of the other 1st round OLB prospects "somewhere" in the 1st if Worilds wasn't on this roster. I personally think OLB will only be the pick in the 1st if their "guy" isn't there and they can't get out. If an OLB is their BPA...Then they will make the pick.
This may be interesting or not, but I recall last year--Melvin Ingram was purported to be an on-field terror and dominator in the SEC, who also clocked a sub-par 40. He ended up being taken 18 overall. Anyway, I went to look up how he did this year (granted, it's only one year): 16 games played, 2 starts, 41 tackles, 1 sack.