(Really a suggestion to ALL car manufacturers, not just Mitsubishi)
Having had a family member follow me home in the i-MiEV the other night (I was driving a company car), I realized just how well-designed the exterior lighting on the i-MiEV is. The low-beam headlights don't cause any glare at all above the cutoff line/shelf, and even below, they aren't blindingly bright. The side marker lights are visible from the front, but my favorite design feature is how the turn signals are separated from the headlights by a decent margin. This makes them very clearly seen at night.
I've noticed that, on way too many cars, the turn signals are tucked in next to the headlights, and with the glare from the low-beams being too bright and just throwing light everywhere, the turn signals cannot be seen at a distance. The i-MiEV doesn't have this issue at all. Also, even though our low-beams don't shine as far down the road as other cars, this works out to both reduce glare and serve as a guide to following distance. Putting the light shelf at the base of the car in front of you is just about the proper following distance for 45 MPH roads, as another i-MiEV owner I know also pointed out.
So, my suggestions are:
1. Properly aimed projector-style low-beams.
2. Separately housed turn signals at least 8 inches away from the low-beam headlights, preferably outside and/or below the low-beams.
3. Warm White light (cool white/blue just blinds oncoming drivers in my opinion).