An instrument needs a body
Many software synthesizers explain themselves as diagrams. That can be accurate and still fail to make the instrument inviting. Musicians reach for consequences: brighter, wider, rougher, slower, more unstable, less polite.
Nyris is organised around a resonant body. The engine may contain oscillators, modal behavior, envelopes, modulation, dynamics, and output protection, but the interface speaks in musical moves.
Authored instability
Instability is useful when it has boundaries. A sound can bend, bloom, smear, and appear to resist the player without destroying the session around it. That requires the safety layer to be designed with the expressive layer, not added as a final limiter.
Five pages, one instrument
Depth does not require menu archaeology. Seed, Root, Sculpt, Envelope, and Motion give the instrument five clear pages. Each page should answer a musical question rather than expose every internal wire at once.