Aperture might or might not run on HS (not sure), but holding to it until Photos catches up is not very good strategy, at some point it will just stop working (and it's not getting any new fixes, updates, etc).
Better move to Lightroom or something similar.
I don't want to rent software, and I don't want to install the dreaded Adobe installer. What other good alternatives are there? Darktable doesn't pass the test.
You either take the feature-set hit and switch to Apple Photos ( which does a great job with basic tweaks ), or you switch to Lightroom. Everything else is way below par. Your photos just won't anywhere near as good.
Basically I want a GUI version of ImageMagick.
Plus non-destructive editing does not preclude a non-IDE, non-library based workflow.
So, basically Lightroom.