The guys at Dead Air and TBAC have confirmed that yes, good muzzle brakes do spare the blast baffle some direct force, and helps mitigate erosion of the first couple baffles from the fire and gas. So, brakes do have their advantage, especially on shorter barrels. magnum cartridges, and anything larger than AR15 cartridges, like 5.56, .300 BLK, and 6.5 Grendel...
So, yes, being a solid Grade 5 Titanium suppressor, the Nomad-LT will benefit some longevity on the blast baffle by using a KeyMo brake and KeyMo setup. over direct-thread. I have a Nomad-LT, as well, and love it! It's one of the quietest cans I've ever heard in person. I run it with KeyMo, because I swap it around on all my rifles a lot, especially on my R700 5R 22" .260 Rem with a KeyMo brake, and it's a phenomenal setup. I like the QD, and the KeyMo brakes. The setup is repeatable and predictable POI shift when running it on and off the gun. I can put it on my 6.5 Grendel and it will hit exactly where I've zero'd. I remove it, and put it on my .260, and it hits exactly where I've zero'd. The KeyMo is a very good QD setup. It is a bit heavy and hefty, but after weighing my Nomad-LT with the KeyMo and the Dead Air thermal wrap, it's not much more weight than a standard Nomad-L with only a direct-thread adapter in it, and NO wrap.
As far as recoil, the brake might make some difference, but it would probably be so small you'll never feel it at the shoulder. But I can't guarantee that. Just guessing, since once you put the suppressor over the muzzle brake, the whole unit acts like a giant muzzle brake to reduce recoil.
Accuracy... I highly doubt that it makes any difference at all.