I have two requests for Photosynth that will allow it to become something that we see more of.
1) Allow the synth to export, so I can embed a photosynth that I make into a web page, or so someone else can gran a synth they like and put it in their web page or facebook, wherever.
2) Give us a place to add and control sound. I'd like to explore photosynth a little more indepth, and when it comes to building web pages and video artwork sound is a big component. On that note there could be some sound controls for the creator as well, so that the sound could even change to a different sound track depending on where you navigate to.