Allow ArcMap to Zoom to the extent of a geotagged photo automatically, without having to download the ArcPhoto toolbar. Maybe you could embed the ArcPhoto toolbar into the core ESRI release, and improve upon it. Allow users to view full screen images of photos. ArcPhoto limits you to a thumnail image of the photo. Allow the user to create a point feature class of all geotagged photos in their database, without loading all pictures into ArcMap. Allow them to save the feature class in whatever format they want (shapefile, geodatabase, SDE, etc.).