Having watched in recent weeks, it strikes me that we would've won some of the games (Burton springs to mind) if we had defenders that knew what they were doing. All of Burton's goals came from poor defensive positioning and marking, which are areas you would expect the defensive coach to spend time working on, as opposed to Adams himself.
In the midfield (especially at the start of the season when we had fewer injuries) we didn't look terrible -it wasn't great but it wasn't 24th standard- and the same goes for our attack. Also, defenders like Smith-Brown and Peter Grant don't look bad, but we still let in goals that I think our defense (despite its lack of quality) shouldn't be letting in, regardless of who we had as defenders. They just look like, with a different defensive coach, the squad could be lower-mid table as opposed to relegation.
That's just what I think, but I am curious to hear others views.