8. Stick to a name either Jabber or XMPP, not both. It's confusing.
9. Make people aware of how many things are Jabber in disguise (Whatsapp, Grindr, Google Hangouts, etc) with a corporation behind monetising it using the people as the product.
10. Incentives for running servers. In Mastondon we're really good at justifying donating to our admins when they run a decent service.
11. RFCs or XEPs written as easy to read an implement as NIPs.
12. Attached directories. XMPP is directoryless same as email, what about searching people by their Mastodon handle, by their email handle, use WebFinger.