Nice post, Rock.
Not a whole helluva lot to quibble about, really. Just two things.
I don't think our WR corps is the league's worst, necessarily. More importantly, the top 4 WR's look like they can be quite effective when combined with the improved OL, a decent QB, and the elite Gurley. We haven't yet really seen what the combo of Gurley, Britt, Austin, Cooper, and Spruce can accomplish together while catching passes from either Keenum or Goff. But I think that we're all gonna be real pleased.
The other thing is that I think that a 10 win season is not only possible, but should be the minimum threshold for Fisher to keep his job. The many improvements in the roster that you just well outlined tells me that they add up to at least 3 more wins.
As an aside, I will also be holding my breath as GZ goes out for his attempts this year. He's gotta win me back over, man.