Made it all the way through — took a few attempts to get the planning right, but once it clicked it went smoothly. A nice, very minimalist puzzle; it reminded me a bit of the board game Set, that same "hold three traits in your head at once" feeling .
There's really only one thing to judge here, and that's the logic — and the logic is solid. The inheritance rules stay honest, which is exactly what this kind of puzzle lives or dies on. Nice work!