1- Quoting in from posts when posting a comment, and the function so one can quote the comment it’s self. This would take some posts to a real level of discussion.
2- Better or more functional pages for user. User profiles with uploading of pictures functionality, registered user (admin, authors, subscribers, etc). Doesn’t need to be fancy but informative. Eg, when someone visits another user profile he should get some of the resent comments, posts etc, simple stats showed for that use, with some information and avatar, etc.
3- If 2 get implanted then having user avatars for posts or comments would be the ultimate thing.
4- Implant font sizing (image or text based clickable) into a widget. Also options for the overall font size to be set to whatever value.