Yes, I think it’s better to use original HG as I have completely no time to spend on this (and other) projects since previous summer when I’ve become a father and got a promotion on work.
Rewriting UI is important but I don’t like the idea to use Gene’s developed UI framework (zuix) for this purpose when there are Angular, React and VueJs which are well known by developers. It would be hard to attract new developers to the project when they have to study everything from the ground.
And also the backend part should be rewritten in my opinion. I don’t like the custom implementation of the web server that we have in HG, I don’t like code structure and style. Readability is not good. A lot of parts are tightly coupled and this makes it impossible to cover the code with tests.
Now we have .Net Core, and the third release will bring a lot for IoT world (ex. classes to work with GPIO, common devices), but I don’t see any movement towards new technologies adopted by many developers. I think that’s one of the reasons why nobody contributes to the project. When you say that the project runs on Mono with UI written on jQuery Mobile everybody runs away .