I was actually at the game last night and thinking of this post when I was watching the wide receiver rotation. I drew the exact same conclusion: Why do we have to burn a game against arrival, plus another half of football to figure out fundamentally obvious things?
Part of the problem is that this staff, which is comprised of enough (too many?) individuals from a previous failed regime, have fallen susceptible to the Greentree wormhole. We simply do not get good data from our camps and continue to rely on it nevertheless.
We don't have anyone to replace Gerald Willis and Joe Jackson. When it appears that you might, is it because the offensive line is weak, or are the players legitimately producing at the same level? Are you in turn thinking that your two OT are better than they are? Diaz showed good awareness as a coordinator, I would hope it will translate into his role as a head coach. Right now though, we need teams to rub the dirty diaper in our face before we realize the baby has taken a dump.