Multiple AB loops would be fantastic. In fact it would be a true game changer for the DeoVR app... You could mark the whole video with your favorite segments of the scene and next time you play the scene you will see all your favorite parts in a row. Also if it becomes savable data so you don't risk losing it would be amazing as well. At the bottom of the UI it could list something like:
A-B 2:24-4:59
C-D 7:34-8:45
E-F 11:55-14:21
With a 'save all' button and a 'clear all' button
And so on.....