Because you asked (in your post on the new layouts) people to make tech suggestions....
I'd like a little bit more control over the size of image I look at. When I want to look at a series of photos someone has posted, I have to zoom in on each one. It isn't a big deal, but sometimes it would be nice to be able to go from one straight to the next without resizing in between (I need to zoom in to see details, so comparing details on two images means I can never "fix" one in my mind, then go to the other). Also, why are there only two fixed sizes, instead of iphone's usual ability to zoom to whatever size/portion of image I want?