Somewhat realistically, I think that I could have a happy endgame with an amp upgrade, a higher-tier front end, and the cables that complement them. Pick up the d1-digital mkii or sublime reclocker and move up to the Signature Rendu SE tier II. Amp wise, a Riveria AIC-10, Aries Cerat Genus 845, or Angstrom Stella SHA20. No movement on the DAC front necessary for this. I’m quite happy with the d1-unity, and if I was told that I couldn’t have another DAC then my feelings wouldn’t really be hurt, lol.
A bit more ideally? I would like to eventually step the unity up to the triunity. Adding in the companion reclocker is still a no-brainer, but I’d move up to the new Oladra over the Sonore offerings. My choice for the amp upgrade for the Utopia wouldn’t change here. Those are pretty top tier amps, after all. I would build a second chain for the Susvara. I’d have to put some thought into what that would look like though. Maybe a Lampi into a nice pre+power amp combination? MSB Premiere > WA33EE? Not really sure. Having a second high-end chain is a far-future goal at the moment.