You could make the case that had Talib and Kupp stayed healthy, we could have gone 16-0 and won the Super Bowl. One of them was out for every loss.
Now, injuries are going to happen, but my overall point is that the Rams were "too good" - meaning we got diminishing returns on defense with all the "stars" we had. For example: does anyone doubt that Joyner and Suh's replacements will be upgrades for the regular season? Postseason Suh is another matter, but Joyner nearly lost us our season on what should have been an easy INT lofted up by Brees.
Couple this with Cooks/Talib/Peters/Fowler all in year 2 and should be better. Goff should be better.
Noteboom was awesome when he got in, so I'm not worried about him. Sullivan was not good at center, so as long as either Allen or Goff pick up the slack with the mental side, that should be an upgrade.
We'll be fine this upcoming year. The following year gets dicey and that's what this draft will be about IMO.
Brockers, Peters, Talib, and Whitworth all expiring - and Weddle's contract is probably more of a one year deal like with Sullivan where we shouldn't expect him back next year.
Goff, JJ and Kupp (and possibly Littleton too I think) will all be due extensions too - we have the space, but that's a lot to re-sign and a lot to replace. So I expect a DL and OL that will groom to take over for Brockers and Whitworth (at G so Noteboom can move to LT), two CBs to develop and hope that we can land a late round guy as a starter, and none of that addresses backup QB, which will probably be drafted this year too. But again, we have the space, and possibly the comp picks next year too, to fill all of this.