Mixer Discord Integration
The ability to properly connect your mixer account to your discord account where - like with the twitch connection - if you are streaming on mixer it shows that you are streaming and your title (and that you're streaming on mixer) the one big downside on my switch from twitch to mixer is that a lot of my community uses discord to know when i am live, either by my name saying i am, or by my announcements channel. the mixer bot doesn't @everyone in the server so my options are really limited right now.
This is something sorely lacking and quite shocking due to the amount of usage Discord has in the gaming world!
Mixer - get on this!