What makes discord is the community around it, and the fact that 3rd party sites have decided to support it.
Also there's the legal (important for edus, etc) and other support from the Discord people themselves.
Gamers aren't going to leave what they already have -why would they? Edus sure as heck won't -who does that leave, a couple of hackers? Maybe?
A better approach would have been to:
a)Not use Discord's logo in your README.Md FFS
b)Build up infrastructure similar to and competitive with Discord's but FOSS oriented
c)THEN after b is accomplished, work on a client and a server.
Like the many reddit clones that have come and gone (and the slashdot clones before them) this will be a mouse fart into a hurricane