i think Orr is the first DC to seemingly not ever put it together
Wink's defence became tired but some of those seasons before that defence got found out were magic
all the previous DCs were pretty consistently good-to-great - Mattison, Pagano and Pees were all good hires i think
OC has been a bigger problem for sure - Kubiak the standout, but Roman was a good hire (harbs just kept him on for too long), Monken was a good hire too i think
the problem with Harbs and coordinators has always been that the good ones are going to get poached on both sides of the ball which over the long-term means you won't have stability - the ravens tried to overcome that by having an organisational pipeline on defence and schematic principles and hiring internally but it still relies on having that pipeline - and it seems like they either picked the wrong horse when Mike Macdonald left, or that pipe finally ran dry