1: The homepage/preview/summary doesn't show line breaks. Nice idea, but in practice it makes the summary look a bit too solid when we're previewing so many characters.
2: com_content hacks - I've mentioned these before. How would one detect the use of the Mamblog system and hence modify output into a blog-friendly stylee? Answer: check the $_REQUEST["option"]=="com_mamblog" I guess...?!