me too, there are also some LibreElec-users, which are interested in 3D-MVC...
It isn't an issue for everyone, but for us...
Well, that's unfortunately nothing that kszaq could implement just by the way... I hoped/asked because I wanted to know whether there are some guys working or planning to work on that. Apparently nothing changed, so RPi2/3 is the way to go if needed this function.
According to this post Sam@OSMC is working on frame packed output for his S905x based Vero4K box. If we're lucky, this could happen to become the basis for frame packed in other similar SOCs like this S905 one in Odroid C2.