I don't have too much experience in programming circles, but as a streamer on Twitch, I'd say that most of our communities are actually THROUGH Discord so having the Discord channel actually is a huge help and builds more communities this way. Especially with more of the younger demographic getting into games, Discord is one of the most popular social platforms and it seems that they'd find this a lot more accessible than going to a website.
Just my two cents! I don't think there needs to be anything set in stone but either way, SUPER looking forward to this game :)