I feel your pain Silver, but I'm not sure that it would have sped things up much.
Review the posted shop pictures and you'll find that in any given photo he was mostly working on a single model anyway.
Even when he had three models shipping I think that he was tinkering on the next one and trying to finish up the last one, but mostly he seemed to be shipping the one he was working on. For example, right now I think he is trying to finish up the 2.7, and tinkering with the 7/7, but mostly shipping the 4.1.