For scenes you've already tiled, just copy and paste the image tags from the existing xml. Or if you always use the same image source dimensions, you only need to do a find and replace on filenames to create new scenes based on new images. The droplets are just very basic introductions to krpano xml. Its faster and easier to edit your own and then you have full control over the output and order of scenes.
Thanks for the answer, that's the way I did it more or less...
But I was thinking in a droplet where we can just drop the equirectangulars panos and it only generates the xml without tiling the images... Would be useful, at least for me...
By the way using that service it comes more easy to rewritte everything.... http://textmechanic.com/