Any plans to implement proper UserStyles.org support where themes can auto-update like with Stylus? Some of the most popular style sheets update quite frequently.
Stylus already does it well, so I think you could use Stylus for such websites. UserStyles.org is still owned by SimilarWeb, so I would stay away from it. What is planned is to add some static themes for popular websites.
Global CSS will work well on text websites. For many others it will break up the coloring and make page parts hardly distinguishable.