I prefer the carrot to stick approach, where players are encouraged by nice communities to chat, not forced.
It can take a while for someone to get courage up to talk to established groups, and don’t get me started if they have sound issues and Discord.
Voice chat is badly broken with Voice Proxy errors the last time I used it. A blue is on the case, but unclear when it will be fixed. People are still asking for a fix.
(Not sure how to link cross board quotes properly)
I have used that, Discord can be hit and miss for me. I left TBC (it gradually got a bit hardcore for me at the time) later the guild fell apart anyway with server transfers, and not really been back. Probably my age, I am not used to using Discord and had re-occurring sound issues. 
I would like it to be easier to find social groups and communities beyond the intimidating 10/10H stuff or full time expert mode RP kind of thing. 
I would start a community myself, but don’t know if it can be done without it turning into a constantly active, full time, all day every day commitment or needing a pre-set group of friends to help run it.
(Would also need more chill, friendly old people 
).