A2B sounds awesome.
Perfectly suited for the next Variax. Thing is, I think the next Variax belongs in a pedal or breakout box -- now that A2B means you can pull all the audio (and MIDI) off the guitar separately.
In fact, 32 channels is enough to separately carry the audio for each string for each "pickup". You can route all that to a box at your feet, used across all your guitars. Knobs and switches can also be carried on the same 1/4" cable and processed in that same box. You'll never need to rewire your guitar again, just reconfigure things in the box.
I've been day-dreaming about just such a rig for way too long. I'm ready for it to arrive.