Should we look to upgrading the Line Backer position in the Draft?

We all know and have been discussing up grades on the D-Line, but should we look to upgrading the LB position through the draft or free agency?
I believe we should. Mario Davis isn't getting any younger and sooner or later we will need to draft or bring in through free agency, his replacement. Also we drafted D'Marco Jackson, but he's been on IR since preseason. So we haven't had any time to evaluate what he can bring to the linebacking corps. He was very talented and productive at App St. in college. Our top priority on defense should be re-signing Kaden Ellis. He really started coming into his own this season, I think the light has finally come on for him. He's getting better in coverage and his run defense has gotten better and he's good as a blitzer. We have a star in the making with Pete Werner. The rest were all late round picks and were undrafted rookies. I do see some potential in Nephi Sewell. Hopefully he can show some progress and lessen the priority to use a high draft pick on a LB and wait to draft one in the latter rounds. So what do y'all think about it?