The plan is to eventually get to full ECMAScript specification compatibility, and who knows if that would then bring us to eg. the Servo browser or Deno JS runtime.

In the short term, I am interested in one-shot script running scenarios where only very limited JavaScript type are needed. The engine already has a bunch of feature flags that can be turned off to disable things like ArrayBuffers and other "complex" features. I have a work-related system in mind where only JSON based types are needed, and garbage collection isn't really necessary: The code could be run once and afterwards the system could be wiped down to the initial state and re-run.

I also have half-a-mind to try running Nova on an STM32 board. But that could be called a hobby project within a hobby project :)