You have to understand that Pace was very upfront with George and Ted when he said this was going to take time. He came into a literal ****-show in Chicago and had to gut not only the team but the building as well (coaches, trainers, hell even Halas Hall).
Pace took over in 2015, with a defense that just earned the honors as "Worst In Chicago Bears History". Fast forward 3 years and our defense was ranked #1 in the NFL.
Pace stripped down one of the oldest -- if not THE oldest -- rosters in the NFL and now has the following core pieces:
WR - Allen Robinson
OG - Cody Whitehair
OG - James Daniels (rated 5th at LG by PFF last season)
NT - Eddie Goldman
DE - Akiem Hicks
ILB - Roquan Smithh
OLB - Khalil Mack
FS - Eddie Jackson
That's solid talent with a handful of elite players. Clearly we need to do upgrade the talent level offensively, and I think we would be fools to not give Pace and Nagy every opportunity to succeed on that side of the ball. Nagy is here through 2022, Pace is here through 2021. Unless the team completely falls apart next season (I don't see that happening) I can't imagine Pace and Nagy being fired. I'm firmly of the opinion they should be given another shot at drafting a QB if Mitch fails... but I'm one of the few on this planet that think the kid has not yet hit his ceiling. Trubisky is the least experienced QB to ever be drafted in the first round of the NFL draft since the 1967 merger. That means something as much as some care to ignore it.