That was my thought as well.
Well of course this thread concerning Lightbox, so those things applicable to Lightbox, and this recent thread about the Carousel.
It seems like the Lightbox and Carousel styling are reoccurring themes/questions by users, so I would certainly target them. I am sure there are perhaps other areas in Blocs as well for users to suggest, but other areas may be more direct already for styling. @Mackyangeles or even @Eldar could perhaps be a good users to give suggestions on possible desired Subclass needs.