So I had a play around looking at the map formats, and also took a look at an attempt from back in beta by another forumer that got some sort of result, but nothing usable in terms of custom map use in Demigod.
I am wondering if there is ever going to be a GPG-released GR2 exporter so that we can convert a 3DS mesh/skeleton/anything else we need into a usable GR2 file to put into DG to play. I am guessing there are some license limitations associated with providing such a tool, so I am hoping GPG can clear up definitively whether this is a possibility or not.
Cheers.