Yep, you are right. Because all ARM boards supports OpenBSD.

And the PVR GPU on BBB is of course the most friendly GPU.

Dedicated account to astroturf Odroid?

Nope.. Just didn't knew the site until someone linked it to me.

Yes it does and uses standard linux v4l2 interface via the Samsung MFC.

A Bucnh of blobs = 1 Single blob for Mali. The other files are symlinks ok?

They put a newer XBMC image lately that fixed all the slow issues.