About the Duometre, I was told ( in October 2009 ) that there were a few hundreds made ( à chronographe ), and my guess is that JLC wants to see this Duometre lasting quite a long time.
I don't see why it would be different for the Q.L which is a more " intellectual piece " than the Chronographe.
My dream is to see some " Entry level " belle horlogerie " at JLC.
For the moment, we are happy to see the Cal 849 ( Master U.T  and the Cal 822 ( basic Reversos ) existing.
Nice movement, with an interesting level of decoration and finish for its category price.
I would love to see some more manual movements, with a superior degree of finish and decoration, not ala Dufour or Voutilainen, but well, you got my idea, ala Geophysic, let's say.
As for the Duometre, can't agree more with your opinion, I sing its virtues since April 2007, and totally convinced and fan since the very beginning.
I don't see why JLC would be seen as inferior to PP or Lange with the Duometre, personally, except the fact that there is No PP name on the dial, which is pretty good as the Duometre attracts true passionate of fine horology, not snobs.
Could JLC be soon accepted for its true value?
Here is my personal opinion: JLC has already earned a lot of- more and more- sympathy, these last years, and starts to reach this " recognition " value, with such enthusiastic masterpeices such as the Duometres, the Gyro I or II, the MMRs, and so on.
The Tribute To ... is also a good way to pay homage to the rich patrimony of the brand, and should prove, demonstrate to all what JLC was able to do in terms of Innovation, at this time ( even if the competition was serious, but if you take all the watches they made in from the 30ies to the early 70ies, what other brand can say the same? ).
I think JLC is in the good path, sincerely.
Best, Dean.
Nicolas.