After my Pebble I tried an e-ink "Watchy" from SQFMI (https://watchy.sqfmi.com/) thinking that the battery life would be great but the battery only lasted a few days.
I've been wearing a Bangle 2 (https://www.espruino.com/Bangle.js2) which feels closest to recreating my Pebble. It has super long battery life and feels a lot like my Pebble did, but doesn't have the polish of the pebble UI and animations.
Can't wait to get a new Pebble!
I've written my own watchface and a couple of other apps and made changes to a number of existing apps, it's really simple because you can always test your code changes live on the watch while keeping it on your wrist. There's an IDE that connects to it using Bluetooth and the code can be modified during runtime
Lthere's also a great community of hackers and tinkerers that steadily improve the watch.
It might not have the same polish as the pebble had, but it makes it up in hackability. I can only recommend getting a banglejs2 (battery life is also pretty great, I get about 10 days with regular use)