I think we underestimate the amiga audio chip
based on this, we could really have an instrument by itself applying some new concepts using our lovely Paula.
I thought the easiest thing to do is a Live Sample player based on Fasttracker instruments. It could work on a productivity screen to achieve >28k samples even on a plain a600.
I could easy convert multisample instruments to 8 bit XI, so the amiga could be used as a drum player connected as MIDI slave. Some kind of "Fairlight CMI" emulator for amiga would be nice.