Pretty good ideas, i'll like to see some of them...here goes one: how about if you can set pics to a "favorite pics' folder", in that way you can keep track of your favorite photos...maybe put a limit to it so it doesn't get too big...the star level...well you decide
Sometimes you see someone with a great pic as avatar. You want to see that pic, but instead it takes you to the first page of the folder from that girl and you will have to look for it. I've already found a trick how to find those pics easily, but it can be a problem for other people. Maybe it's a idea that when you click on somebody's avatar, that you immediately get to see that pic in full view.