I must have missed where Reeder beat out Kiser for the starting ILB. Kiser got hurt vs. Tampa right in the middle of him playing as well as he played all year. I don't see any reason to think that Reeder would be ahead of a healthy Kiser on the depth chart. Kiser being relegated to special teams in the playoffs was due to him not being 100% healthy, not that he lost his starting spot by being outplayed by Reeder. Reader played well last year, but Kiser played better, and should still be ahead of him on the depth chart.
Also I don't see how Gaines would move ahead of SJD. Gaines slightly improved, SJD improved and remains a better option for us. Gaines is a solid back up, but again, I see no reason to assume Gaines moved ahead of SJD. Gaines, A'Shawn, SJD, Hoecht and Bobby Brown give us a nice DT rotation, and I believe that both A'Shawn and Brown will see time in Brockers DE spot....likely there as run stoppers, with Banks, Copeland and Williams getting a chance as pass rushers out of that Brockers spot, similar to the role Morgan Fox played.
In terms of the edge....obviously if Lewis is healthy enough for major snaps, he's the front runner to be on the opposite side of Floyd..... I'd say Hollins is ahead of Obo on the edge, but with a full preseason it could change. Lawler is still around as well.
As far as ILB..... I wouldn't guarantee that Kenny Young will be around, as we need to shed some salary to sign our rookies.....and drafting Jones..along with us bringing back Travin Howard may be a sign that Kenny won't be kept. So from my perspective, Kiser is ahead of Reeder, with last years projected starter Howard getting a chance secure the other ILB spot whether or not Kenny is around. Jones development is telling as he has a skill set that could bump Kiser over making him more of run stopper sharing time when Travin. But we'll see how that plays out. We have a lot of versatility at ILB now, and if there is one thing we all learned last year....the Rams are MUCH better having 2 ILBs on the field more than using the hybrid safety. That was the most dramatic change from Wade to Staley is the amount of time we kept 2 ILBs on the field, and our defense became the #1 defense in the league. We're simply a better defense with 2 ILBs on the field....proven from last year. Also with JJ gone, Rapp has a chance to lock in the SS spot for himself so his usage as a "hybrid" should be minimal. Our nickel package with Burgess as the slot and Rapp at SS gives us a stout Nickel, but our base defense needs to have 2 ILBs on the field based on the success from last year.