How would the group be used?
Would it be casual visits or structured around events, e.g. demonstrations / tutorials, etc.?
Mostly casual chatting/showing off and a way to get quick questions answered immediately. It could have most of the same channels as we have here on the forums.
I don't know what 'discord' is other than what I see by glancing at their webpage, not sure that I get it. If you have a multiplayer game then I can see that voip and shared scene views improves the gaming experience. How would Discord be used?
Discord is the new, better group chatting program opposed to Skype, and it's knocking Skype out of the water as far as performance and features go.
The site's description can be misleading. Yeah it's good for gaming, but its primary feature is a group chat system with categories.
As opposed to Skype, you can make different "channels" in your group with different topics where people can chat about different things in different rooms, all on the same group. You can even add permissions on who can post where and see what.
Voice chatting is immensely improved as instead of one person calling everyone to chat and bothering everybody, there's a voice chat channel always open that you can click to join and talk to anyone who happens to also be in the voice chat room.