Nice looking rack Paul. Your design is one of the many I stole some ideas from after reading about it on thenewx. Amazing drawings, too! They were VERY helpful!
I opted to keep it very simple, which is why I didn't use the L-bracket design. I did, however, sort of use your side light design. I just ran crossbars over the top of the OEM tubes and mounted the lights under them so they wouldn't stick up higher than the rest of the rack. These front and rear crossbars over the OEM tubes make the whole design act like a "backet" like yours, too. That being said, I do envy the extra space you have with the L-bracket design bringing it so close to the roof.
And thanks, Ghost! Now I just need to put a bunch of crap up there and do a little wheeling.