I'm willing to give Brown the benefit of the doubt due to a history of recent success in a lot of places running the same schemes. I'd love to see him adjust the schemes to the players, but most coaches aren't willing to do this and that's why struggles are so common after coaching turnover.
That said, the defense is a disaster right now. I prefer an aggressive defense, but our blitzes just look so slow to develop. Is it because we tip our hand and allow the protection to adjust? Is it because the players are tentative? I'm not sure, but when we send 6 it looks like they're moving in slow motion.
Also, I really question how we're using certain players. Sio Moore is average at best in pass coverage, and as I recall an above average blitzer, but he's constantly covering a tight end or slot receiver. The LB's that we send after the QB are always either Johnson, Smallwood or both. Maybe that's because they're worse than Sio in pass coverage. But we don't appear to be playing to the strength of our best linebacker.