I just ordered an Apple Watch Ultra 2 and am looking forward to trying out Double Tap/Gestures. I just hope this isn't another 3D Touch gimmick that "works like magic and will revolutionize the way you interact with Apple Watch."
The MacBook Pro Touch Bar was supposed to be the future. Dynamic Island was the star of last year's iPhone 14 Pro and iPhone 14 Pro Max launch but was barely mentioned or improved upon at Apple's iPhone 15 event this year.
I was looking forward to the new Action button on my 15 Pro Max but I don't know if it's just muscle memory or placement (way too close to volume, which is what I press most times) that I hardly use it. IMO it should have been placed on the lower part of the iPhone, where it's easier to access, doesn't require a big reach, and can always be reliably pressed.
Like I said, I'm looking forward to trying it out on the Ultra 2 and this thread has been very informative.