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I could see it being a great option for getting bulk goods into space. Fuel, water, food, spools of wire or powders for additive manufacturing, structural components, etc. Depends on what is cost effective. The difficult part would be catching the payloads.

It would probably be an even better option on lower gravity lower atmosphere celestial bodies.

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When you have low gravity and little atmosphere, I can't imagine many scenarios where a spin launcher would be a better fit than a mass driver. One of the biggest problems with a mass driver on Earth is that you need to do it in a vacuum over a huge area, which isn't a problem with - say - launching from the moon. The spin launch approach makes some sense on Earth, given that you only have to build a (relatively) small vacuum chamber and a very well-timed airlock to let the payload get into the atmosphere.

But the counterweight issues, extreme G forces during spin-up, etc make it kind of a non-starter in my mind for other bodies; I'd love to hear arguments for it vs simple mass drivers off Earth.

IMO Kantrowitz laser propulsion seems more practical for that https://www.niac.usra.edu/files/studies/final_report/897Kare...