Re: cutting down gratuitous phone use
Andrew is onto something here by identifying freedom from the annoyance of ones iPhone as the best feature of an Apple Watch, but let's come at that from another angle:
How about taking all that "the essential features of your smartphone" call and notification functionality, and put it into a form-factor like the old Nokia 8800 Sirocco, with that kind of "jewellery" build-quality. (I had an 8800, and as a physical object, it's still by far the nicest phone I've ever owned), so it can be carried in a jacket pocket, or a small purse or clutch.
Add a WiFi hotspot to the LTE modem, as there'd be enough internal volume to allow a decent battery and properly-spaced antennae, and it allows either a small tablet or laptop to take over the "detailed browsing and apps" role of the phone.
So, now I've got something that I can use to receive notifications and phone calls on (with the bonus of not looking like I'm starring in some some sort of low-budget Dick Tracey fan-flic whenever I take a call) - plus I can use it to give my laptop or a tablet 4G connectivity wherever I am*. Plus it won't look out of place in the few times I've got to dress up.
Oh, it also seems that I've made the actual "smartphone" redundant in the chain. I could live with that too.
I know there are solutions out there (the Punkt phone reviewed a day after this), but I'm comfortable enough in myself to admit that I'm sufficiently vain to want something that is beautiful, and not just functional.
(* I'm aware that you can get LTE-equipped laptops and tablets, but as network operators have chosen to not implement the "multiple SIMs, one account" feature of GSM, having another device means a new account, and basically paying twice for the same low data usage)