It would be cool to have everything in one place and to be able to send an email directly from the application.
I would love to have the ability to send out invitations for my public events so that people could respond if they are coming or not.
I would like to have the ability to add different registration levels to events. For instance, for workshops or seminars I need the ability to have a separate price for working vs autiting spots.
I would love the ability to export my DogBizPro calendar to my Google Calendar.