I think at this point, it wouldn't be surprising if he goes back to some previous formulas.
I didn't think the selfie stick or the scooters were big plot points, just quick visual gags that might strike a chord with some viewers.
The early seasons were great though I don't remember a lot of those episodes. Going to have to rewatch.
But season 8 had some brilliant episodes like Palestinian Chicken. But that was almost 10 years ago!
And the series started 20 years ago.
It's hard to expect that the show would have the same energy of even 10 years ago. Still, I think Season 9 had some great moments and I would expect season 10 to have as well.
He may not explore new ground. He has the same attitudes as Seinfeld, no hugs, no learning. In fact you can say CYE was a more profane, updated Seinfeld, with very few network censor constraints.
But I'm fine with that, will keep watching as long as he makes them.