Too much of searching currently is based on keyword. But photos should be able to be easily searched other ways, like date, location, color, etc. If I could search all of those and limit it to myself or a friends photostream it would really help me find what I'm looking for.

I use it all the time to search my own photos. It tries to figure out the content of the images so I can search for "horses" and it will find every image I have of horses (well of course it's not perfect).

Camera Roll is certainly useful, but I'd love if I could just quickly click on a calendar and see photos from a certain date rather than waiting for Camera Roll to load up and scrolling/filtering through the huge list. I realize Camera Roll has this feature as well, but I miss the old "Archive" version.