Reynolds is a very good run blocker. So was Cory Davis. So was Jonnu Smith. In Reynolds, they've replaced one of those guys.
The Titans offense is built around running Henry. Everything else flows from that. Davis/Smith were key cogs in that, with their blocking skills. IMHO, nothing about the offense is going to change with the acquisition of JJ. It's not like they acquired 27-year-old Julio Jones. I might be one of Julio Jones' biggest fans, but even I'd admit he's not Julio Jones any more. He's still better than Cory Davis, but the gap isn't as wide as it once was, and although I've heard Julio can run block, I don't know how well, and Davis was very good at it. If Julio is as good as Davis with the run blocking, then they indeed have replaced Davis/Jonnu with Julio/Reynolds. If he's not, they're going to have to find someone who is, and that person is going to see the field, because Henry is what makes the offense go. The only change you'd see on the field would be more 3WR, but that doesn't mean a shift to more passing, because Reynolds is basically taking Jonnu's place. I think it would be prudent, at this moment, until we see otherwise, to project Davis #'s for Julio and Jonnu #'s for Reynolds. Julio wasn't much of a TD guy in ATL, I'm not sure why that would change in TEN. No change for Brown, no change for Henry. Firkser isn't going to see much PT if he can't run block, and neither is Fitzpatrick, so there you go. There's not much subterfuge or slight-of-hand involved in the Titans base offense, as far as I know, and there doesn't need to be - "we're going to run Henry at you - good luck stopping that. Every now and then, we're going to burn you over the top after you inevitably cheat the run, because you don't have an alternative. That's probably going to get us to11 or so wins. Have a nice day."
Julio going to the Titans is not going to wind up being nearly as exciting in January as it is right now...and again, I'm a MASSIVE Julio guy.