Port of Espruino to Pi Zero - native - no Linux

what's the advantage over node.js or BoneScript at that point?

It'd just be the digitalPulse and accurate pulse measurement with setWatch.

Also the way you could just point the Web IDE at the board's IP address, connect, and use all the existing Espruino hardware-centric stuff (in fact you could just serve the Web IDE off of the Pi).

Basically it'd be more beginner-friendly than node (IMO)