Personally I wouldn't put a load of people in something that only had two doors up front. From a safety point of view, that would be my concern. On the other hand they are a true thing of beauty from the past.
I won't get in the back seat of a two door car, but it has more to do with stiff tired bones than safety...
There are lots of two-door cars on the market, I don't see the rear seats in a Suburban being significantly different egress wise than most of what is on the market today.
