First (meatball) thought - WOW, Bears have THE best front 7 in whole NFL (plus Fuller & Jackson which then probably makes it THE best defense).
I mean, Hicks, Mack, Quinn, Goldman, Roquan, Trevathan & Nichols, that's crazy good.
But then, then you take a hard look at it and see lots of underlying issues:
1. Quinn excelled as 4-3DE, and was rather ineffective as 3-4 OLB
2. He topped 10 sacks in his contract year (was below that number in 4 prior years), plus potential age combined with durability issues
3. Waaaaay too much resources spent on D side of football while for example O-Line just plain sucks (RG and OT issues)
4. With Floyd cut, Pace record with 6 1st round picks - 1 hit (Roquan), 2 traded away (for Mack), 3 busts (White, Floyd, Trubisky), that's just putrid and severely affects the Cap (that's why Bears have Cap issues right now)