Thanks to everyone who brought this thread back up from the dregs a month back, it made me realize how low-res some of the pictures of the final couple levels really were (thanks to me having to scrounge for a camera at the time). Ever since it popped up, I've been planning to take some new pictures of the Death Star, to allow for a bit clearer viewing of this monstrosity.
It's been two years now since it was built, and the parts are showing some age. Stickers that once color-matched the paint now are a little too blue or green, while many of the curved surfaces have begun to separate. I hadn't paid much attention to the details in a long time, but I guess this is the difference between a home-made toy and a store-bought one. I can foresee a small refurbishing project on my horizon.
But enough talk, here's some new pics. I'll start at the top and work my way down this time around, beginning with the chasm set...

At the back of the chasm is Ben's Tractor Beam Control Tower:

I also built the piece that fits between the two anniversary-set bases to bridge the chasm like in the vintage playset:

Thanks to dafoo, CHEWIE, Gregorbian and Anton for the comments. I'll be back periodically with more updated pictures!