They could have done more.
I know very well there's only so much money to go around. I'm saying it was allocated badly. We could have the best defense in the NFL and it wouldn't cover up the lack of investment on the offense, because in today's NFL, there is no defense that can prevent KC from scoring 24. Or Baltimore. Your offense has to score 27 against those teams for you to win.
For instance, take Terrence Brooks's money and Bolden's money, and get yourself two OL backups. Newhouse, Elmuenor, etc., these late adds were very bad and just highlighted the fact that we went into the season without capable backups except for Karras.
We went into the season without Anotnio Brown--it was a fluke he was even available, so he wasn't even a part of the plans. He couldn't have been. Instead we signed cut-rate WRs we signed like Harris, Inman and Thomas. Do better there. Draft more TEs and WRs too for backup depth. We had enough extra picks to take another guy and a TE, like Mecole Hardman, AJ Brown, DK Metcalf, Irv Smith Jr., Terry McLaurin, Dawson Knox, Hunter Renfrow, Darius Slayton, Kaden Smith, etc. Hell we dumped a few late round picks because we didn't want to use them. Surely, we could have thrown darts at 3 OLs and hoped one of them would be a better backup than the disasters we rostered.