We will occasionally try new mediums, especially if we believe they don’t present a lot of risk to do so at the time. Twitter Spaces is an feature that other teams within Blizzard have been testing, and we felt we could benefit from a similar execution.
We’ll still host events like AMAs and livestream Q&As. This was just something new and different.
Regarding the audio playback: I believe we get an archive of the Spaces event. Knowing our team behind Twitter, it’s possible we could be doing something with it.