It would be great if the admin could add new fields to the postings. This would be great for me because I could add an "image" field where I enter an image url. It could be included in the post template and I could use it however I want.
I would use it like so:
if ($theimage !== "")
print "<img src=\"$theimage\" hspace=\"5\" vspace=\"5\">";
Im sure others would like to have this option to add fields like: "What Im eating"... :)