Portability work tempo

I'd love to get a good tempo or feedback loop going on fediverse
portability work.  My early questions are:

* who is interested in a standardized activity-pub-compatible export
format?   What are the use cases?
* To what extent can activity pub itself be used by a destination server to
fetch a user’s content from their original server? What information would
be missing?  (for one, I think the user’s list of accounts they follow)
* What are the requirements or use cases for portability of **moderation**
information?

 If folks are interested in joining a call I've got a couple busy weeks but
then March 14 at 8am PST is looking good so I've blocked it off. We could
do something monthly not too close to the general group meetings?  LMK.

Lisa