Ah well. For those who still want nanobots in protodermis, I just realised that nanorobots working in protodermis might be true in one type of protodermis - organic protodermis. Greg said once or twice that organic protodermis has a DNA equivalent - it forms "cells" out of itself, mimicking cells from real life, down to having DNA. The thing is, DNA codes for the production of proteins, which become parts of cells and are used by the body for other things. What if, instead of proteins, organic proto "DNA" codes for nanites that produce more organic protodermis? It kind of fits with how Makuta use viruses to make Rahi out of protodermis - the viruses are larger versions of the naturally-occurring nanites. They then help start the creation of specialised organic protodermis tissue (eg tissue with high elasticity for stretchy Rahi, etc) and also help to program the Rahi's protodermic DNA. *slinks quietly away, shaking head at self*