Oh my. Are you a professional investigator by trade? Either A) your powers of observation are super-human or B) you've spent some serious time going over photos. Strong work!
3. Electronic sensor just rear of rear brake caliper...speed sensor for determining rear wheel lock-up on regeneration for slippery roads???
I've been thinking about this a lot. I haven't noticed this sensor, but I have to imagine that they would need to employ some kind of engine braking control. I learned an interesting lesson at a Pridmore (Jason, not Reg) school once. They tell you that the first thing you do when you go off is to drop a gear and rely on engine braking for the initial deceleration. The idea is that you might drag the rear wheel for a short distance, but eventually the wheel speed and ground speed will match up. Same idea behind backing your bike into a corner. So that made me think that Brammo could probably come up with a reasonable algorithm that would allow for this type of action, but it might be really hard to get it to feel right to the rider. I could easily see someone dumping to many gears and getting into serious trouble.
And in fact, with braking zones diminishing so much, guys really aren't backing it in as much and they really need stability under braking to get the thing to turn in while trail braking. I was reading in a Road Racing World that the hot new area of electronics development is engine braking control.
So I bet you're absolutely spot on with your theory.