The key features are that
1. It would allow you to select new posts and threads from your site. Some could be featured.
2. It would allow you to add your own personal message.
3. The publication could be pre-set for a SCHEDULED TIME using the cron feature of the XF software to publish every month or week, for example so you don't have to run it manually (which is very annoying).
4. Additional styles would also be nice.