FWIW, the i-MiEV was rated as worst green car by Consumer Reports: https://consumerist.com/2016/03/17/10-cars-that-consumer-reports-says-are-not-so-great/ They called it "only slightly better than a golf cart."
It's basic to the extreme but I've been hanging out at the i-MiEV forum, and owners love them. I did watch a funny Youtube review that mirrored your sentiment...he actually called the Soul EV a "Bentley" compared to the i-MiEV. On the used market, you can buy three i-MiEV's for the price of a Soul EV.
I just made an offer on a 2015 Soul EV with ~12,000 miles on it (at about half the price of a new 2016). It's a lowball offer but the dealer has had the car for a while and may be motivated to clear it. The salesperson thinks it should be enough to get it done but is having the manager call me tomorrow. I'm pretty sure they are going to try and squeeze an extra $1000 out of me. We'll see. I'm already stretching my budget above the Spark EV but the bigger battery, chademo, and 6.6kW L2 charging are worth it.