I'm pretty sure a TE will be used/needed. Maybe not as much as before. (A FB - probably not.)
The Titans with LaFleur at OC/playcaller completed 50+ passes for 600+ yds to a so-so group of TEs/H-backs this year. Other teams we are looking at, to raid their offensive coaches like NE (60+ for 800+) and New Orleans (60+ for 700+), also both use tight ends reasonably often.
The real question is how much you want to invest in them. Maybe you don't need first round talents or big-$ FAs but you can only run unique formations a certain amount and it's no longer novel, and defenses adapt. I believe that even the most innovative offenses will still use concepts at times that go back to more traditional looks and formations a significant amount of snaps. A good coach will use a TE if he has one, and adjust if he doesn't, unlike MM.
I'm hoping the new coach will be more flexible in terms of using what he's got. (Unlike MM Philbin who seemed to want to, for example, force DeShone Kizer to be AR last week instead of adjusting and giving him some safer and easier throws to make.) I'd also like to see less of this "one personnel package for an entire drive" stuff. Sure the defense can't sub, but you also limit what you can do and cut down what a defense needs to defend. Let's be less cute and more cutting edge.
As for controlling AR - who the hell knows. Maybe he was just pissed off with MM and will fall in line better with a new coach - at least for 2-3 years. After that, it may not matter.