That would be cool, if you could explain a bit how your chronological comment thing works. I'm completely in love with the concept.
Also, I've been playing around with your style on my journal recently, and I have a couple of comments. Still really like it, but I've turned up a couple of minor flaws. Firstly, you haven't set your style to public; is that intentional? I had to copy and paste your code into a style of my own to be able to use it. And that means I can't use your themes (except by copying and pasting the code for them as well.)
The other one is the ability to change the font face and size. That's the first thing most users want to customize on any style, (other than background images which you have catered quite nicely). It's the quickest way to make your journal look 'non-default', and more than that, it can be an accessibility issue. For example, some people are visually impaired and can only read certain font combinations on screen or need a minimum size. I appreciate you could do it in a theme layer with CSS, but my opinion is that it's basic enough that it should be in the wizard. Just my thoughts.
Also, how would you feel about my playing around with your code to make it more CSS-able? Because people are always going to come up with customizations you haven't thought of in the wizard. There are a couple of places I've spotted where more named classes would be a real help with flexibility.