Absolutely.
Our smallish company has used Discord all year long for our company communication and I could hardly be happier. They have an excellent bot API, a super clean yet playful interface, instant search and just don't feel/smell as "enterprisey" as Slack already felt (and that was well before now being acquired by Salesforce).
If Discord can maintain all those things and add a bit more Microsoft integration, they have a huge opportunity here.
(Either that or Microsoft can preempt the whole thing and acquire Discord).