As you may know, the scrapped BN5DS which was supposed to be in 3D still intrigues me. I've found a nice tool called "Console Tool" which can open NSBMD files. Having the tool open the leftover models yielded different results. The character models don't look too different and I'm really more interested in the animations it may have. The maps looks different though. I've taken a screenshot of one of the maps that was rendered in 3D. It looks a lot like an ACDC area but it has different paths.
If the program could display the model correctly, I'm sure the whole map could be seen. This is always so fascinating!
Update: I contacted the author of the program and he was able to accurately display some of the models with a more recent version of his tool When it's publicly released, expect a video showing the models in their true form.
Here are some of the pictures he took.