I am quite new to krpano but I start loving it. You might want to have a look how an animated switch to Little Planet looks like. The switch back is animated as well and returns to the position you were right before you entered the Little Planet:
http://www.michael-goericke.de/pano/diverse/Brunnenplatz
http://www.michael-goericke.de/pano/wien/stefansplatz
http://www.michael-goericke.de/pano/wien/gloriette2
Regards
Michael