With how successful and marketable eeveelutions are, I can't believe Gamefreak seems to have zero interest in completing all eevee types.
It's been almost 20 years since they've made progress completing all eeveelutions. (no, sylveon does not count on making progress).

Is it because they are afraid of accidentally infringing on fan made eeveelutions since fans have already drafted up every possible idea?
Is it because they are afraid of ruining a good thing and don't want a shit eeveelution design to bring down the rest?