I tried the multiframe droplet last night and it is COOL. I didn't have direct line of sight panos, but just to see the function, I dragged several equalrectangles onto the droplet. It took a while to process and then all of the multires images were put into one folder. My observations were when you clicked the forward or backward buttons, the pano went ahead two panos with the one in the middle flashing very quickly. I would assume when preparing your panos, you would have to center them exactly how you want them to face before dropping them on the droplets.
Shoot a few panos, I would say a minimum of 5 and try it out numbering them. Then look at the multiframe config file and start tweaking. Have fun.