Additional fields in the Rocket Properties dialog would facilitate better file repositories. In particular, the rocketreviews.com ORK file repository has many files with no additional metadata at all, because the files were mechanically gathered from other places.

I am using that repository as a model.

First there's "type":

If the type is anything other than "Original Design" then you are also prompted to enter "Kit Name". In the case of "Kitbash" you are prompted to enter multiple kit names. Nowhere does it ask for Kit manufacturer, I don't know how that goes in there.

Then you can also specify "Optimization":

I might do this a bit differently, with separate checkboxes for "Flight", "Appearance", and "Construction". If flight were unchecked we could consider disabling the motor config and simulation tabs (there are pluses and minuses to doing this).