Great comments and questions. I'll try to respond as best I can, without writing a treatise. I realize my posts tend to run long, but I dislike sound bites. They're bad enough in politics, and should be shunned when discussing something really important like college football. I'll try not to impose too much on your Southern hospitality.
I'll concede that while I think our RB's may be underrated, we don't have a Heisman Trophy winner available for scout team duty. Our recruiting coordinator should be fired. We do have a true freshman who goes 235 and runs a 10.8 100m. I missed seeing him run in the Army AA game, so I don't know whether his style bears a resemblance to Ingram's. At the least, the coaches can tell the defense, "here's a strong, fast back. Now gang tackle him".
My guess is that, if we put a safety in the box, it will be Nolan Brewster. His dad was an asst. coach with the Broncos, and supposedly John Lynch tutored Nolan. Not that Brewster's the next John Lynch, but you get the idea. Coming out of high school, it was thought he might be converted to LB. Blake Gideon's a wrap-up tackler. Again, Christian Scott might play a role here.
I believe we'll play press coverage on JJ. I get the sense he doesn't like that. Besides, speaking just as the fan I am, I wouldn't let a guy with his gifts gambol freely into the secondary. If Aaron Williams is on him, there will not be a double-team. Should be fun to watch.
Our LB's? Rodd Muckelroy reminds me a lot of DeMeco Ryans. DeMeco played outside for Bama (I think), but was moved inside by the Texans. Muck was supposed to play outside this year , but moved to Mike when the returning starter there got hurt. Both DeMeco and Muck can run sideline-to-sideline and hit you, but both are a little undersized. On the outside, Keenan Robinson and Emmanuel Acho have decent size, run well, and will whack you, especially Robinson. They showed problems operating in space against A&M's receivers, however. Don't know whether that was an anomaly, or something McElwain can take advantage of. Why do I keep having bad dreams about Marquis Maze?