Thinking that simple is better here, so I tossed out the big vertical sidebar navigation for a much simpler nav bar at the bottom. Also playing around with putting wiki changes in the sidebar.
Any thoughts? I think I'll stop twiddling with that for now and play around with getting a few more things released.
Okay, maybe one more tweak. This is not exactly like out-of-box Movable Type, but hopefully not annoying.