+(Not in any particular order, and
+performance, ease-of-setup, installation, maintainability, etc
+all need to be considered for everything we introduce)
+
+* general performance improvements, but without relying on
+ XS or compiled code any more than we currently do.
+
+* mailmap support (same as git) for remapping expired email addresses
+
+* POP3 server, since some webmail providers support external POP3:
+ https://public-inbox.org/meta/20160411034104.GA7817@dcvr.yhbt.net/
+
+* TLS support for various daemons (including STARTTLS for NNTP and POP3)
+
+* Unix socket support for HTTP and POP3 server for use behind reverse
+ proxies like nginx
+
+* Combined "super server" for NNTP/HTTP/POP3 to reduce memory overhead