Fae,
Yes and I am very glad you did! I reuse a lot of your upload work and plot ways to harvest it for Wikidata, which is not easy of course. I totally agree it would be great to have dimensional data on Wikidata in such a way that you could identify miniatures (but also small bronzes or trophy cups from outside statues, etc.)
I also would always favor an approach of "dump what you have in the free dormat fields", but increasingly I am also thinking that we approach this all wrong. We should first dump the data into Wikidata, check with queries that it is as expected, and then generate the uploads to Commons, not the other way around.
Jane