On the surface, probably the more obvious answer is yes. I mean it's Aaron Smith after all. The most underrated defensive lineman in the modern era of the NFL. Smith is big reason our defense has been so good against the run for all these years. I've been a fan of his since he came into the league. When you watch him just stand fast and hold his blockers, tying up 2 lineman on a regular basis and giving no ground at all, it's just amazing. He is extremely intelligent and can diagnose the play usually before it's even snapped. Lebeau thinks the world of him and with good reason.
Now, having said that, a certain Ziggy Hood has quietly put together a really good year. He had a great camp, but early on he did seem to get lost and manhandled. We all wondered if this kid was really going to pan out. Then by mid season he started finding his stride. He became a regular member of the opposing teams backfield and if you watch him he was improving each week in every phase of his game. Teams could no longer just stick a tight end on him, or let him alone with the RT and call it a day. I noticed that Hood was learning how to shed blocks, shoot the gap, use his power and speed to penetrate and blow up the play. He didn't have great stats, but as a defensive lineman in the 34, you never do. Clearly the Steelers defense had it's best statistical year vs the run in the modern era of football. Hood was as much a part of that success as Hampton, Keisel, or anyone else.
So I say, Smith getting his job back full time may not be a done deal. If I'm Lebeau, given Smith's injury history the last few years, I use a generous rotation of both guys right from the get go next season.