It’s definitely hard to get a database going. B767Avia posted my Gemini Jets 1:400 database on here and it is most certainly incomplete. Still working on getting the GeminiMacs stuff too. A majority of the main, public release models are included, but I am missing some of the more deeper, lesser known exclusive models. As such, I don’t see a database being added here due to the daunting nature of it; needing to get every big manufacturer out there, the smaller ones, etc.
Unrelated, but it does make me wonder how many unique 200 scale and 400 scale model airplanes have been produced. The number has to be in the tens of thousands, if not higher.