I agree, JCM is a cludge. I tried to originally set Glamorous Jessi up with JCJ, ghost joints to do the things that the morphs do in JCM. My idea was that these could be easly added to the clothing. I actually got it to work, up to the point I tried putting it into the clothing, where the who scheme fell apart. Oh well, I tried. Most of GJ's joints are designed around JCM, I convinced myself that you could go places that you couldn't get to with straight Poser joints. Some of the bending is "wrong" in itself, but it gets the mesh to a place that the JCM can correct easier, for a better end result. There are other approaches, though.