What upstream documentation is missing?

[James-E-A]

I think I might be in contact with a representative of VEIKK; they're doing some aggressive, though surprisingly courteous, social media solicitation (probably against their platform's ToS, but ehh)

If you "had a wishlist" for just-what-the-heck-you-want "from" the manufacturer, what would that be? Is there a particular datasheet, or specification, or such, that's obviously a thorn in your side and you're having to reverse-engineer? Or, is all the data already exposed through the HID protocol, and the driver is a pure engineering effort?