SHACL complexity

It would be nice for each new feature (or more realistically a bundle of
features, i.e. Profile) to have some idea about its implementation and
execution complexity.

I'd like to take 20-30 min from the next Monday meeting to discuss these
issues:
https://github.com/w3c/data-shapes/issues/321
https://github.com/w3c/data-shapes/issues/242

Is this realistic, and would people like to comment in these issues
beforehand?

Cheers!