I was just wondering about having a volumetric-style node (a little like Ogo_Hikari). What I was thinking, was have it defined by something like a gradient, and have textures applied to certain depths. Each layer would have a transparency/clipping setting, penetration depth and amounts, spec, etc. I know that this is extremely complex, and my programming abilities aren't anywhere near up for this, but think about the possibilities with such a node! I mean... if you had good enough alpha maps, you could create incredibly complex models based off of a low resolution cage. This is asking a LOT out of any programmers out there, but something like this, I would definately be willing to pay for. Anyone else?