Keep in mind that the mockup is only for layout discussion and the colours, graphics, etc. were just placeholders to define the layout. You'd apply whatever graphics, styles, colours and fonts etc. that you'd like to it after of course.
I'm no web designer (like it's hard to tell), but the three thoughts I had in mind while creating this were: simplify, simplify and simplify.
Of course I could be an idiot and completely wrong about that!
I also thought putting the planet TLLTS posts and/or a shortlist of hot forum topics might be a worthwhile if they were front and center too.
Like I said, I just thought I'd post it to get some discussion going. Let's hear the opinions!
I created the mockup with Inkscape. If anyone wants the svg file to play around with, let me know.
Here's the thumbnail:


