In general, you actually want to draft defense and go FA on offense. Defense is a young man's game. Defense doesn't age well except for the very elite, near HOF level players. Offense tends to age better with OL and QBs especially being able to play well into their mid-to-late 30s and sometimes you get a Tom Brady who's elite at 40+.
The Bears have drafted offensive heavy as of late out of necessity. They've had most of their starters on defense for multiple years. But going forward, they'll hopefully be drafting more defense.
QB- hopefully won't have to draft one for more than a backup for the next 10 years.
RB- won't have to draft one early at least for 2 years, and hopefully never in the top 2 rounds
WR- probably have to add 1 with or without Robinson next year w/ losing all but Mooney and Dazz. Probably either the 2nd or 3rd round pick in 2022. If ARob re-signs, then this position should be set for a while after that
TE- probably have to add 1 next year, doesn't have to be a high pick though w/ Kmet the primary guy
OL- could always use an early pick here. But 3 projected starters are signed beyond 2021. Borom could be 4th starter. I'd spend 6-10M AAV on the last starter. If not re-signing Daniels, then should be big players on the FA market
OLB- Quinn gone after 2021 season w/ cut. Gipson and Attaochu under contract, but could use a top pick here with Mack now 30. Between OLB and CB for one of the first 2 picks next year.
DL- gotta re-sign Nichols. Lose Hicks, need for a pick depends on Goldman. Edwards and Blackson still under contract. Even if no Goldman, probably a Day 3 pick in 2022 at best. 2023 the need will be there though.
ILB- Gotta sign Roquan long-term, but will need to replace Trevathan very soon. Probably can go Day 3 pick in the next couple years. Maybe Day 2 pick in 2023 if a true stud is there.
CB- If OLB is not a top 2 pick next year (2nd or 3rd) then CB better be. I'd look to add a 1st round talent here possibly as soon as 2023, but definitely by 2024 even if Vildor and Graham are solid.
S- Bears have gotten by going cheap at SS w/ Jackson. I'd use that philosophy as long as I could. Cheap could mean another $1M FA, but at some point they need to spend a mid-round pick to find the next Amos and/or Jackson. Seems like a lot of S talent is available Round 4 recently.