I drift in and out of SL - but I always come back hungry to express myself by creating a new environments - through prim design, region building, scripting, graphics to environmental editing. So, I'm no newbie. But I can't make sense of this mesh tech. Mesh heads? Bodies? I've tried demos, have no idea what BOM is and can find no guidance that explains what this is all about except in the most cursory of ways.
This whole topic makes me think: maybe I just need to move on, what's the point?