I think it should come with a guide that differentiates between users, clients, relays, and protocol.
Like, do those ostriches mean users or clients?

The protocol can be shown as the two-way or one-way vectors, with a special style and color.
Users are behind clients, which connect them to relays. Moreover, there could be private stand-alone relays and clients too.
And any element can be open or closed source, which can be indicated with various colors.