Oh, there are some (little) improvements that can be made
. From time to time, I'm emailing suggestions about things I wish were a little bit different. But it's all little stuff, kind of like the sprinkles on the icing on the cake. If nothing changed, I'd still be happy.
You saw ilovemycam's post about auto users getting the larger thumbnails soon? That's the sort of changes I think we will see for now, incremental rather than evolutionary for the time being.