If looking for a Discord to chat with other devs implementing BC, the "GBaaS" Discord server has an official ambassador inside (although mostly for use with a feedback bot to forward to themselves and unofficial dev chatter with other folks implementing BC). It's decently active in the #braincloud channel:

https://i42.games/gbaas (disclaimer: I run this server, but it's been around since 2016)

I like the new forums. It was something I always felt was lacking and with the quick response time, they have already proven to be very useful. Hopefully this helps connect developers using brainCloud together as well as with the brainCloud team.