I suspect with so many garage-shop mechanics trying out designs for new cans, we'll see an advance in the state of the art . . .
Over the past fifteen years suppressor design has matured a lot. A lot of really smart, talented engineers have gotten into the game and done some pretty cool things. I doubt Cletus or Jesse James are going to bring a whole lot of useful innovation to the table.
In the commercial market, the benefits we would see most would be relating to decreased weight and cost. Think disposable, or close to it.
I've been watching a guy from New Zealand who has done some pretty cool things with selective laser melting to manufacture cans. Very lightweight - under 5 ounces for a centerfire pistol can complete with booster, and under 6 ounces for a 5.56mm can. My guess is we'd see some very lightweight, fully sealed $300-$400 centerfire suppressors made with that kind of technology, tons of $50-$150 .22LR suppressors made from all kinds of junk, and a whole lot of high-end suppressor manufacturers either out of business entirely or selling their logo to be put on cheap junk manufactured by Remchester.