Flores was the weakest candidate Grier even had on his list. He was one year removed from being a position coach, and a one-year DC under one of the most genius defensive minds in NFL history. No NE assistant coach has gone on to have any kind of success as HC in the NFL. And that's not even taking into account how Flores' personality isn't all that inspiring to head a football team. I don't know if Richard will be a great HC or not in the end, but he had many traits and a resume that was superior to Flores IMO. I would make a bet that Richard will eventually have a better career as HC than Flores.
As for the JJ approach, its not covering anything, its reality, and its smart. It might be the best thing I like about Grier. The draft is a crapshoot. It's gambling - a roll of the dice. JJ drafted a BUNCH of **** players, but because he had a crapload of draft picks, he was able to come out of most drafts with at least a few solid players and one elite player. Just look at JJ's drafts in Miami. Outside of his last draft, he came into draft day with 10+ draft picks. With that haul, he drafted a lot more bad players, but he also came out of those 3 years with foundational players like JT, ZT, Pat and Sam who kept the franchise afloat for an entire decade.
My one hope for Grier is that by using that approach, he might be able to replicate some of that. This team has lacked elite players for a decade outside of Cam Wake, and it showed,