The following options are now available:
primary and secondary theme colors. Paid??
several font options. You can choose separate fonts for your blog's title, subtitle, and body
define seo title, description and, if needed, a canonical url - for each article
support for multiple blogs. You choose a different branch for each one. May be a paid feature.
Things still in the works:
thinking about building an npm package, to easily create articles with the metadata shell already in place.
custom domains. May be a paid feature.
article header pic
the home page design for your blog