Hi!
A Course on Online Multiplayer and Online Services would be highly appreciated.
Matchmaking, leaderboards, listen server / dedicated server, implementing social media login and posting, and so on.
This is a complex topic with hardly any books and few tutorials. (only 2 udemy courses covering this a bit more in detail)
Since the gaming industry moves from game-as-shipped-product to game-as-continuous-service (there is this one game called Fortnite, maybe you heard of it ;)),
and with Epics upcoming online service this would be a natural fit.
Thanks!