It's not a great NFL draft in general. I think there is a decent pool of talent at nose/1T, which should benefit the Bears at 25. Billings and Jackson are both over 30, and much help is needed here. This won't do a lot for the pass rush, but should considerably upgrade the run defense.
There are some decent prospects at Edge on day 2, where the Bears pick at 57.
Bears pick again at 89. Adding speed at LB or maybe finding a LT prospect could make sense. Might want to draft a safety, but 89 seems a bit early for that.
Generally, the Bears can go BPA at DT / Edge on days 1 and 2, and BPA at OLB or LT on day 2, and Safety on day 3 and have a productive draft.