I think an average defense by year 4 of a coach’s tenure is a reasonable expectation.IF i remember last years D was 126 out of 130 teams. Even with another year of experience i'm not sure how much better you can expect the defense to play., especially when losing your top pass rusher and presumably one of top DB. I do expect the defense to improve from last year(can't get much worse) , but i think it will take another year for this defense to be "average". Which i think with an improving offense will be enough to win 6 games next year. I can see wanting thiis happen sooner but i don't think it's a realistic expectation.