nanotech and 40k
Ok. When GW originally created 40k they threw in all the elements of sci-fi that people of the time loved.
Since then science has progressed in ways that people in the 70s and 80s really could not have imagined. Today one of the biggest technologies speculated about in sci fi novels is the power of nanotechnology, particularly in terms of medicine, cybernetics, and fabrication. Something that the original 40k writers could not have seen coming. The result is that nanotechnology is lacking from the setting.
Here is my question. If 40k was being written today for the first time what role would nanotechnology play in the Imperium?