[spankalee]

The advanced functionality is left out because it's very difficult, and quite a waste of valuable developer time, to reimplement essentially the same widget set over and over and over again for each framework.

That's just one reason why it saddens me to see so many proprietary frameworks out there with more all the time, especially ones that are so close to being compatible with Web Components. If Vue just used and produced Web Components, it could use a common Material Design component set. The investment in fewer component sets by more people would result in much higher quality and free up developers to work on higher-level things.

[jazoom]

And Semantic UI is far too large for a site that wants to be snappy.