When will someone come out with an 808 threaded ego twist style? I'd be all over that.
808 doesn't get enough love. Most of the things I like don't actually.
I've said before, my ideal piece is a mini ego with a removable control unit so you can switch between auto, manual, ego, 808, and 510 and replace the battery on the fly so you're never locked out of options, and the VV dial on the control unit itself so the bottom can still hold a passthrough. Preferably black auto 808 twist passthrough in 400 mAh.
At 350-400 mAh with the passthrough circuit it wouldn't be too much larger than the 650, could be used while charging, could be puffed on without needing your hands, like when playing a game or driving.