Is the Jack aware at all? This is a pretty nice looking eq and more eq plugins are always a handy tool to have. Needing to use the pulseaudio bridge for an eq makes it difficult to use in production setup with a chain of Jack input/outputs though.
Edit: I am not an audio pro and if this EQ is in fact aimed at production, I would love to learn more about its use cases
While probably not suited for production work, the design is based off of existing production tools that I am very familiar with (Channel EQ from Logic Pro X, Parametric Eq 2 from FL Studio).