I'd also like some clarity on how broad this goes.

Is captioned-in non-consent dialogue also prohibited? What about live action scenes with actors who are verified 18+ but have no curves and look young? Original art with unspecified age? Monster girls from species that don't even live to 18?

There's a lot there and it's above and beyond virtually anywhere else. If this is part of the idea of broad, temporary restrictions as an attempt to reduce the admin workload, really what it's going to do is create a lot of little fires to stamp out when the focus needs to be on the things that will get the site shut down the fastest (obviously illegal content and DMCA violations). Best to keep it simple, and simple is following established standards. Even if it means allowing content admins personally don't like.

There are RSS links in user pages but they don't seem to be working (the magazine feeds do work).

User follow is my most desired feature at the moment for sure. My friends list on reddit's nsfw users is what I miss the most about reddit. 😣