We think a good feature to the multiple sharing options could be to have “tabs” for each sharing in the conference where you can select the tab you want to share. This way you could lay up your meeting or class before the meeting starts and easily select when the meeting has started.
Another good feature would be to have the possibility to upload documents such as PDF, DOC, Excel and PPT into the conference (as on mobile version) if there was a built in viewer. This would save much bandwith as the document then would not be “live” but instead downloaded to the participants.