I have a slight problem with these new retro cars being built. My problem stems with the fact that, in my experience, most of the individuals buying the new retro vehicles available have NO idea/background on the historical signifance of what they have and I can't get over this. It bothers me to no end for some reason.
I have a 68 Camarao (chevy, I know...) and I'll pull up next to the 'new' camaro's and the majority of the people driving them have no idea what they are next to or would even be able to recognize that I am driving a Camaro. Hell, most probably think it's a mustang (which for you bronco folks, that's as bad as people calling your bronco a jeep).
Now with that said, if they do build a retro Bronco, as previously noted, something like an FJ cruiser I believe would be the way to go, 2.5 doors, similar dimension, I believe they are capable off road ?, but with a removable top.