There should be an ability to record the surrounding sound while taking a 360 picture (from the time you start till when you hit finish). Often times when taking photos, you are in very interesting places with music, speech, etc going on (think New York Times multimedia slideshows). This optional ability would add to the scene.

Also see these discussions for your likeminded peers: 

http://web.archive.org/web/20081023195317/http://getsatisfaction.com/livelabs/topics/what_features_should_we_add_to_photosynth#reply_579679

http://web.archive.org/web/20081023195317/http://getsatisfaction.com/livelabs/topics/what_features_should_we_add_to_photosynth#reply_581616

http://getsatisfaction.com/livelabs/topics/classroom_use_virtual_field_trips

http://getsatisfaction.com/livelabs/topics/add_information_for_your_synth

http://getsatisfaction.com/livelabs/topics/right_click_functions_examples

http://photosynth.net/discussion.aspx?cat=6352296a-76e5-4f2a-96eb-d10fdab0de1f&dis=e98e939f-5a1f-49fd-afa6-c1b4e143fe32

http://getsatisfaction.com/livelabs/topics/what_features_should_we_add_to_photosynth#reply_3128333

http://getsatisfaction.com/livelabs/topics/a_synthy_home_tour#reply_3149348

http://twitter.com/sindiploma/status/222610472397058049
 http://twitter.com/photosynth/status/226871836351270912