Since the Law of Game Design opened I’ve used the same theme. I like it; it’s functional, easy to navigate, and has a nice picture at the top.
Most of the themes that allow for that dispense with the tag cloud and category list, although some of them make it accessible through a collapsible menu. Would losing those be a concern for you? Are they useful tools?
More generally, would you like to see a redesign? If so, to add (or remove) what functionality?