Sacred cows taste great. I don't know if the offset sound-hole thing will replace the centered model, but I love the deepening registers it helps create in my GXi. And there's a whole other silly barrier...
I caught Bluegrass Etc
http://www.tricopolisrecords.com/bluegrassetc.htm last night. These guys are near the top of the top of the genre. John Moore played a RainSong dreadnought that sounded amazing. Holy smokes that guy can play.