XMPP vs Discord (Viability-Edition)

So now that discord has made a major oopsie, people are now talking about alternatives. However I do not see people mention XMPP a lot (Compared to Matrix, which gets mentioned a lot).

So I was wondering if we all could brainstorm & share:

• what features Discord has that XMPP currently does not
• & whether those "features" are being worked on
• & if so then; useful links can be provided.

Also let's keep this post as active as possible to track development, if you are interested.