1) Hundreds
2) Yes – all of that
3) Do you usually edit the image content with photo management tools: The option to do so would be very welcome
4) Do you prefer simplicity over functionality? Can we have both, maybe switchable from one to the other?
5) Any wishes on what the application should provide? Check out Quiver and see if that can be improved upon.
6) Where do you get your images: Camera, Internet, Friends

I look forward to your progress.