Echoing some thoughts on this thread:
*Rex's ego is a big problem with lack of leadership and gets in the way of a lot of things. As noted, he wants to get cute and make weekly captains, but the lack of permanent captains fuels lack of accountability to each other. Why not let players elect captains for O/D/ST and then add 1 special weekly captain? Former Giant DE Osi Umenyiora had an interesting comment about the D and DL: he didn't see them all flying to the ball to gang tackle like last year. That comes from lack of accountability to each other.
*Examples of Rex ego: he processes everything in the filter of Rex. Titans game was Rex v. Wisenhut. When Dareus signed his $ extension and Rex was asked for comment, his first reaction was "I wish I was a better player. Holy cow that's a lot of money." This from one of the best paid coaches in the league. As Madden said when asked about Rex: "Well, I saw him eat a dog biscuit. But at some point you have to coach to win in this league...."
*Our inability to make halftime adjustments on both sides of the ball is troubling. (Bellicheat commented how long we stayed with a plan that wasn't working.) We are DEAD LAST in 3rd quarter points allowed. Jets are FIRST with FG to Pats today the only points all year. (We are 27th in 3d Q scoring offense.) https://www.teamrankings.com/nfl/stat/opp-3rd-quarter-points-per-game Last year under Schwartz, defensive adjustments was a strong suit (as was gang tackling).
*I am willing to give this staff a full year to make final conclusions, but right now it sure looks like Rex is Wad Phillips v2, but with a tummy tuck and a man purse.