While on holiday in Scotland a couple of weeks ago, I couldn't resist stopping by Mitsu and Citroen dealers and sitting in the non-NA (North American) iMiEV. Here's a photo of a couple of older used ones a Mitsu dealer had on the lot:

I personally would prefer the narrower and shorter worldwide version, as it would make parking even easier. I thought the room for the passengers was just fine - in fact, I preferred it as my arm could now comfortabley rest on the open windowsill (it's too far away in the NA version).
OK, so here's a question to see just how much redesign Mitsu did: the center-to-center dimension between the driver's and passenger's seat on the "oversized" NA version is exactly 23" (58.4cm). Would someone with a narrow iMiEV kindly measure yours and let's see if indeed this was changed to accommodate us, or is it simply the illusion of greater space by having the gap between the occupant and the door (to accommodate an airbag and better crash-safety)?