Andra,
That type of powerful expressiveness is certainly doable in Wikidata.
To blatantly create properties on a whim by pseudo proxy of using Wikidata items to do the heavy lifting.
But that idea is against most of what I have seen in Wikidata documentation, policy, and community best practices say to do.
The right way forward is to patiently wait for the new property to exist, and then we can continue.
Thank you for drafting the property proposal by the way. I'll wait for it for review.
Here's some examples where we have subclasses under these :
should also ideally have all of Schema.org's subclasses of Action that we have like
should also ideally have the subclass of Videogame
Here's an example of flipping it around and saying that Schema.org can be used as an 'external parent class'
should also ideally have a proeprty on it for 'external parent class' or something similar with the value of