Okh, you seem to have plenty of ideas to occupy your long nights of the next winter [;)]

Enkonyito, I didn't succeed to make the articulated light work yet, but will continue to try.

Would it be possible for the opening to be stopped by the frame?

I have a few ideas about how to set bounds on rotations and translations, but I don't think it will appear before the final release of version 6.0.