I agree with a good portion of what you said.
I do think Byron Jones may be miscast as a Free Safety, and with some grooming, Xavier Woods is looking like a better fit in that capacity. He will absolutely lay the wood, when needed, and yet has better than average coverage skills as a Free Safety. Alternatively, Byron Jones is more cover guy than intimidating presence. The problem with moving him now is the log jam at corner. Of course, if it meant saying goodbye to Carroll, I'd be all for it.
Jeff Heath is more in the box enforced than cover guy with better overall speed than Church. That said, great speed means nothing if you are running in the wrong direction. I do not like Heath in their on obvious passing plays and think they really should consider alternating Woods in his spot in obvious passing situations.
Crawford, I think, is in a contract year, so if his lackluster play continues, they won't have to cut him.
I don't really understand your issue with Williams. Granted, he didn't do much. But with that logic we should cut Beasley to, who has done a whole lot of nothing to date. Like Beasley said on Twitter, he can't catch passes not thrown to him. I also think you may underestimate the value of having a good team-player like Williams.
I got destroyed in preseason for pointing out that while Jaylon can run fast in a straight line, he seems very awkward when attempting to change directions at high speeds. Small adjustments, he can handle well, but when he has to stop and restart, he is generally too far behind the play to make a difference by the time he get's back to his top speed. I think it may be more of a mental issue than structural, but, obviously, there's no way I can know that for certain.
To be fair, La'el has likely had the biggest challenge thus far this season, considering who he has faced for maybe the exception of T. Smith's draw last night with Chandler Jones. Admittedly, he hasn't been great, but to be fair, given the talent he has faced, being great might be asking for alot. I honestly think the entire offensive line has been disappointing so when I point, I do so with all 5 fingers.
Nice write-up!