I have to disagree to a certain point. We do need to address the aging pass rushers, but we have spent capital shoring up the front seven with players you mentioned and others and drafting linebackers Z. Smith, Judon, Correa. (I know neither have been in impact player, because of the way we draft different topic). The issue down the stretch was teams spreading the Ravens out and running the ball not necessarily wearing them down. During the first half of the season, teams were running their base offense and trying to power through the front seven which didn't work. Starting with New England and definitely with Philly, they used 4 wide sets and ran at the Ravens. During the same time when Jimmy went down, the Ravens wanted to keep the safety back to stop the big gains, allowing teams to run against a soft and spread 6 man box. If the Ravens brought a safety down, usually Weddle, the corners would play very soft and give up chunk plays.
The Ravens need better quality corners more than pass rushers IMO. Our corners can't cover for 2-3 seconds let alone 5-6 seconds. They play too far off and still get beat. They are not good which is why they play so far off. The pass rush is decent, but the receivers are open as soon as they get off the line of scrimmage. The Ravens have to spend real capital in the secondary instead of throwing money at cast-offs from other teams (Will Hill, Arrington, K. Lewis, Powers, Wright).