I had no problems with the time jump, thought it was an interesting idea. Breaks with the TOD tradition a bit, but I'm all for trying/flying something new.
JB's right, however, that something seemed to get cocked up as far as the dusk/dawn thing was concerned. I also wasn't that happy about the lack of alt restrictions (historically, most bomber raids in 1943 were not flying anywhere near as high as the cons I saw on Sunday!). And some of the plane restrictions on the Luftwaffe seemed a little punitive (no formations for the tiny number of 88s we did have, for example; I mean, jeez, if you are going to put them up against 50cal and cannon wielding interceptors, give them a chance!).
It was a great idea, and I had a lot of fun, but there does seem to be stuff that could be done better next time, I think.