I noticed that newlines are not allowed in the comments. I find that in many cases (esp questions involving code) newlines would be nice. Does anyone feel this way? If yes will the site templates allow it?
Just a guess, but this may be deliberate to keep the abuse of comments to a minimum. They are supposed to be comments, not answers. If you are showing code in a response, then it's a strong clue it should be a answer instead of a comment.
Comments are already abused. Allowing pretty formatting would only invite more abuse. Pretty formatting shouldn't be allowed for the same reason the maximum comment length shouldn't be extended either.