I stewed on this a bit and was on the edge. I think it's best to preserve some immediate optionality. Very possible we'll unexperimentalize in 0.10.1. This is my cautious personality kicking in as much as any rational decision.
It's possible to imagine that:
- We'd want to put this metadata in some more structured format.
- We'd want to nest this metadata under some object that includes other information about any assets expected to be generated by the output.