Hey, sorry for the late reply.
Tonberry used to work on a project like that, but he's moved on a while ago. I was sort of involved with overhauling some stuff myself a few years ago but decided to work on tools instead. I think
Aigik wanted to do a releasable thing someday too, but he seems to have moved on, himself, also.
So sadly, no, not at the moment. If you're up to working on stuff though, I can help guide you in potentially. 3d wise, we only have
rosuto's MSH importer/exporter, for MGN (Clothing, anything bound to a skeleton, etc) we'll still need to write one.
.SHT ("Shader" file, links to textures and .EFT files) and .EFT ("Effect" file, links to pixel and vertex hlsl shaders) editors will hopefully make it into my next SIE update, but I can't promise that yet.
Feel free to ask any questions if you decide to work on stuff.