That is amazing, thanks for creating this! I'll share it on Twitter so more people can check it out. :)
Viewing post in Optimised model import in Unity
I've just fixed the UV combining but still need to work out how to combine the normals and preserve the soft/hard edges.
I've also got an idea for another importer, which will do the same things, but also convert materials into vertex colour values, so that a shader can then use those values in a single material. This would reduce any model from AssetForge to a single draw call, at the expense of some extra configuration inside Unity.