>>49101486>>49103132In case any other anon needs it, I finally tracked it down.
Video explaining how to install the Maya plugins in it:
https://www.youtube.com/watch?v=y37AF5Fb4Q8 -- description has a dead download link, but if you sort comments by new you'll see a comment by a guy named blurr with a Mega link that's actually live.
The zip contains everything needed to export models and textures from Maya, 3DSMax, Softimage and Photoshop into cmdl/ctex intermediary formats, which can be loaded into CreativeStudio (included), saved as a binary format, and then, if needed, packed into a bch archive using NW4C_h3dbincvtr.exe. From there, files can be put into a numbered garc file using GARCTool (readily available open source program) for use with LayeredFS or to pack into a romfs and then into a cia using other common open source tools.
I don't think the NW4C tools can *unpack* a bch file, but Ohana3DS Rebirth seems to handle that part alright. I haven't done a full test yet though.