3. There's a ton of whitespace on the reader page. It's nice to have a little space between items, but it's also nice to get some news on the page too! (Sorry for the sarcasm.)
4. Is there a way to import or export an OPML subscription list?
5. I would, if I were them, strip the markup from descriptions. When I'm skimming, the markup is disruptive. The goal should be to have every post take exactly the same amount of vertical height, and not very much. They human brain is great at skimming, if you set things up the right way.