I think I've covered what the point was about 3 or 4 times in the thread. It was to gauge the perceived value of VOOM to E*'s HD subs. If subs were given the option of having HD for $10 or HD w/VOOM for $20, and a goodly percentage of them would still pay the $20, then that shows that the VOOM tier is seen as having significant value.
I was surprised by how many said yes, they would pay the extra $10/month for VOOM.