That won't work that easily. Those frames were not suppoed to be used this way.
There would be visible seams.
Creating this kind of frames could be pretty hard and willof course be very time-intensive.
We could test it though. I can take care of the "quater" frame stuff, but I'm not sure how to do this 'exact' UV map stuff.
BTW 12 MB for a shockwave aint that much anyway... I don't think anybody will mind.
Well, maybe some low-end users would rather have a shockwave with seams, than frame drops...