Separate voice chat with friends, while in a server's voice chat.

Some games like GTFO don't have voice chat but benefit greatly from communication so you can use public discord servers to find people to play with. There are also games like New World or BDO that require a few players to call the shots and coordinate groups of 50 players or more. The ability to stay in these servers that improve your gaming experience, while being able to chat with your friends would be a good addition to discord as the only way to do this currently is to download third party apps like Teamspeak.