I am also very curious.
It would require some thoughtful design, but that’s what Elektron does.
Knob per function synths I really like that have less than 15 knobs:
Mother 32
MeeBlip Geode
Volca Bass
And those are all monotimbral. I would expect Elektron’s take, for the price point and form factor, to have at least 4 parts. Perhaps more simplified VA synthesis but with a little something extra, Yamaha AN200 style.
But really further discussion on this topic offshoot should happen at:
What’s next for Elektron?