I had a paperback book about the B-29 but I haven't read it in a while, so my memory of the history might be a bit faulty. I will go so far as to say that by the time that the B-29 was ready, the air war in Europe was winding down. I don't think I can go as far as saying that the B-29 was designed for Japan missions because at the same time it was proposed, Convair received a request from the Army Air Corps to design a bomber that could hit Germany from the US if England fell. That Bomber wasn't finished until after the war and is known as the B-36.
Europe had priority for bomber production throughout the war until that point, at the time it was introduced the air force was running out of targets there, between what had been hit and what was being overrun.
You also would have been faced with the logistical disadvantage of having to support another bomber type, when the other types all ready in theatre had the support, trained crews and the numbers to do the jobs that where left.
B-29 operations begain in China, from Airfields that had been cut by hand by chinese laborers, who where paid by the yard of material moved. The amount of dirt move was indicated by these little piles of dirt left on the field that indicated where the original ground level was.
The B-29's Air Forces where numbered in the 20 series, to distiginsh them from other units. LeMay was brought over from the 8th Air Force to command. The B-29 got a reputation as a widow maker and a hard to handle aircraft so LeMay had an experience pilot, who had been part of the 1st Air Force Bombing raid over Europe, Paul Tibbitts to do a series of semi-acrobatic demonstration flights for the various units getting B-29's. This is simular to what had been done with the B-26 Marauder when it got a simular reputation. Tibbitts B-29 expertise later earned him command of the Hiroshima mission.
OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.