All the regular tags as normal, but the multilayer tags are changed so that all the indented, second layer of tags are under a details dropdown section, which opens up to show all the second layer of tags on click.
I don't know enough about S2 to tell whether that's feasible without Javascript or how, and Dreamwidth doesn't allow custom Javascript so any JS would have to be vetted and made available sitewide. For a more informed opinion, perhaps ask in dw_styles.
Re: Add text to tag page of community
I don't know enough about S2 to tell whether that's feasible without Javascript or how, and Dreamwidth doesn't allow custom Javascript so any JS would have to be vetted and made available sitewide. For a more informed opinion, perhaps ask in