There are many multisample formats out there, the natural question is why should a multisample device support a particular format? The Caladan’s support for Soundfont and SFZ makes a lot of sense as there are many, and also many free multisample packs out there.
Here I would like to float the idea to possibly also support the Decent Sampler format as there are also a lot of great, free multisample packs out there (also on Pianobook).
https://www.decentsamples.com/product/decent-sampler-plugin/
I have no idea how easy that would be, but I have noticed on the website linked above that they offer the plugin also as a Linux ARM 64 plugin (both static and dynamic). That’s what I remember Brad mentioning in one or several of his videos as the format needed for Caladan, but I might be wrong or misunderstood what he was referring to.
Thanks for considering this idea.