+* more and better test cases (use git fast-import to speed up creation)
+
+* large mbox/Maildir/MH/NNTP spool import (see PublicInbox::Import)
+
+* Allow NNTP and more of PSGI code to work without Xapian
+
+* Read-only WebDAV interface to the git repo so it can be mounted
+ via davfs2 or fusedav to avoid full clones.
+ davfs2 needs Range: request support for this to be feasible:
+ https://savannah.nongnu.org/bugs/?33259
+ https://savannah.nongnu.org/support/?107649
+
+* Contribute something like IMAP IDLE for "git fetch".
+ Inboxes (and any git repos) can be kept up-to-date without
+ relying on polling.
+
+* Expose targeted reindexing of individual messages.
+ Sometimes an indexing bug only affects a handful of messages,
+ so it's not worth the trouble of doing a full reindex.
+
+* code repository integration (with cgit, gitweb, etc...)