So, I'm getting closer to making this look how I want, although I've made some grievous hacks to get here, so I'll wind up overwriting some important stuff, I'm sure.
I'm planning on having another box towards the bottom -- under the article part, with probably 4 items accross, around the same width as the current nav/sidebar. I'm not yet sure whether I'll put the MT stuff there, or in the sidebar... at least Mason makes this stuff dead-simple to change.
I'll probably do a bit more reworking on the Mason components that I'm outputting from MT -- they could even take arguements and such without much effort, although I still haven't found any thing that would be worth passing as an arguement.
I also need to clean everything up -- and make sure that the MT links and such actually work. I'm quite sure that at this point it is still impossible to post comments.
I love the way Mason lets me put this together, now that I've got everything broken up into components. I can't actually figure out how to show HTML in here and have it not be interpreted, so we'll just leave that off for the moment... and some point I'll figure out a good way, and show that and some other stuff.

First test comment
Yea, it looks nice...but it almost looks just like the MT default page...might want to mix up some stuff. I really like the fonts though.
Looks good.
I still hate white backgrounds, though. :)