You have no idea what you are sitting on here

With the tweak of the code you could add default server and hide server list options. Then people could have there own dedicated discord.com website just for their server. Include server specific invites and your done.

With a tweak of another button you support authentication integrations so people can have them join their server by authenticating elsewhere and it would supply the required information to Discord. Support for OAuth would be enough to begin with. 

With another tweak you could allow JS themes for single site servers with a market for them to be traded and installed from. Basic ones being free but then more advanced having a money value figure.

With another tweak you could have a single channel pop interface that acts like common IM client in a small window. These could be for support windows, server staff support, anything that would find that format useful.

You built the engine…. now leverage it!