Hello!
Lee, that is a real shame about the D3200 not being able to be controlled from PC!
It is quite a turn-around for me in thinking about cameras, hehe. Before getting into 3D the goal for me was fullframe and shallow DOF, hence me getting the 5DMKII.
I actually was checking out the 4/3rds cameras like Panasonic GF and GH series since I have the first versions, GF1 and GH1, which were really good. They would be even more preferable due to even smaller sensor-size.
I found the GF3, which sells for a very, very low price, but ofcourse they had removed the remote shutter socket on the later models.

I will be updating my newly started thread with different lighting, my brother and I have a whole bunch of studio flashes, LED panels, MH and CFL lights, hehe.
Andy, that is some great information about ReMe! Something I have been pondering is working together with a photographer, so as to get access to a proper studio, lighting and know-how. That way you do the R&D, bring the many cameras and your 3D knowledge and they can bring the photography knowledge (and potential customers). That might be an idea?
I personally think this is a great time to enter the market. Things will probably progress fast with these technologies, but that just means you have to be flexible and creative and take advantage of it. I have to admit that I do this also because I love it, so I might be a bit biased, hehe.
The 4D stuff I have been thinking a lot about too. I am a relative beginner at this whole 3D thing and there are probably huge pitfalls that my lack of knowledge can't see but there seems to be a lot of options here. My thought is something along capturing quality model thru PhotoScan and driving it with kinect or motion-based technologies with things like this
http://www.ipisoft.com/ or this
http://forum.libcinder.org/topic/future-is-here-time-of-flight-camera-for-150-from-intel-with-sdk (this was posted in that thead
http://www.youtube.com/watch?v=rE4nllP9bb0 I can't wait to see what the future holds!) as example.
As you mention with the results from 123D catch, that is really the impression I most hope to avoid when offering to consumers, hehe. Which is why I think there is a lot of room for us to help them get quality results with no hassles (that is my goal when my skills are good enough).
mala, it will be very interesting to hear what you find out! I'd also like to thank you for the lightdome things you've posted about elsewhere (might have been here too, I might have missed, hehe), that was very, very interesting!
Best, Magnus.