last question:
nono.
I think, for soaring simulation, there is better software out there, because thermodynamics is a very complex subject.
and, i do not think, highly doubt, that in the context of WWII (1935-48) any complex thermodynamics were considered when planning operations.
I mean, you can not make the outcome of a landing depend on rising and falling winds...
things like
"we absolutely need to sail that gigant over the alps and land it in Munich for the war to end" (to ridiculize the idea)
"sorry sir, we hit a cold front, and the G-11 plummeted down, and we were almost capztured by the Wärrmacht"
were not the case back then.
I think gliders were reasonably close to their targets when released, so that they could reach it, without depending on hot or cold air masses.
?
I am convinced that Il-2 Sailing planes are never flown by Humans. (the exception confirms the rule)
I think that "pushing" sailing and thermodynamics subjects are not necessary, even if the question can be very much interesting at higher altitudes and level Bombing...!