Yannick is developing the unified UI for openHAB.
My proposal here is a lot more sophisticated. I have identified problems in the backend http interface, proposed new API endpoints, modernized and simplified OH core code. But OH core development is slow as hell. (The core maintainers are busy fighting Java. I can understand that. They do not have time to develop new features or replace grandpa-aged subsystems.)
I’m no longer participating in core development and I’m developing my own smarthome system for my personal uses. My UI has been moved to my repository and is no longer OH compatible.
Cheers, David