I do get the point - here is my counter-point:
* Arcturus is $2,500. In my febrile imagination the MIA JM would be $1,100. For me, at this point of my life, I can justify the latter but not the former. (Much as I'd like to have one ...). Price still matters when the difference is +/- 50%.
* I do indeed like / love the options provided by alternative builders. But at the risk of seeming very uninformed, I've yet to see something that has all the crucial aspects of a Jazzmaster (the sympathetic string length, the super single coils, the broader fretboard) at a price under $2k. Which brings me back to counter-point A about price.
You're right - I know what I want. A pre-assembled JM made with first-rate parts for <$1,200. Given that I find MIA Strats acceptable (or at least the good ones), it seems that it has to be possible.
Along the same lines of this discussion is a point I saw being made in Talk Bass, where someone tried to order a $1,800 MIA bass from Fender. They wanted a certain color body (which was stock) with a rosewood fretboard (which was stock for the model but on other colors). FMIC's response: "Nope, no can do."