I don't see why aerospace fighters are a hard concept. Its basicly the same concept as a space shuttle, which flies just fine both in space and atmosphere. And a jet chopper would also work brilliantly. You see, all you need to stay in the air is a force which counteracts gravity. If I understand the fluff correctly all airborne vehicles use various exotic technologies that completely internalize the engines and its fuels.
The reason a normal airplane can't get into space are three reasons. First the trivial one, its not airtight. Second, its engines depend on oxygen from the air to function and third the engines do not generate enough thrust to proppel the vehicle fast enough to exit the gravity well.
For the aerospace fighters and VTOLS, these problems are circumvented. Firstly, since space is part of their intended operational theatre we can assume they are airtight. Secondly since they use fusion powered engines, they do not relly on any substances outside the vehicle for its engines to function, thus function fine in vacuum. And finaly we can assume they are designed with the propper amount of thrust to weight ratio as well so they can reach escap velocity. Not to mention in the low grav enviroment of an astroid (if any) would only make them need less thrust to fly, so this only makes it easier.
Back to the main topic, its good to read that people have similar problems with the map. Both the impossibility of navigating it in a meaningfull way with ground vehicles and its large size are the main contributors to my frustration with this map.
You forget that space shuttles do not navigate with rudders and wing flaps because there is no atmosphere to create the drag needed to turn. A space shuttles course is plotted out to use the gravity of the earth and moon to get it's navigation. They launch when the earth is in the proper rotation so the initial aim is in the direction they need the ship to go. Minor adjustments are made with smaller jets to correct course, but the course itself is not "steered" on the fly.
You also neglect the lift factor present in planes. It's the higher air pressure built under the wing, with the foil allowing for lower air pressure above the wing. This high-below air pressure is what gives the plane lift (not the engines or jets, those simply give it thrust). Without atmosphere, there is no air to create drag on the underside of the wing, thus no lift. Likewise, it would be impossible to turn.
Additionally, for every action there is an equal and opposite reaction. With less air for the reaction, you get less lift on the action - not more.
Now, I know I'm no rocket scientist, but this is simple high school physics. Your entire view on how airplanes and space shuttles work is so wrong it's not even funny.
Here's a link to show you more about how air pressure is needed to affect flight:
http://www.allstar.fiu.edu/aero/images/lift-v.gifV is the velocity of the wind. Higher velocity means lower pressure. The higher pressure of the underside (and lower velocity of the air) creates the lift.
Without atmosphere, and thus air, there is nothing moving under or over the wings. In a vacuum, a plane won't fly. Without air, the propellers of a helicopter will not create the backforce needed for lift either.
Once again, digressing from the topic of the map, to which I suggest removing hovercrafts.
Edit: I do want to clarify again that this not only gets my mod of the year award, it's one of my "best mods of all time" nominations as well. I'd even go so far as to say GAME of the year quality here. Not trying to detract from the mod teams wishes, just pointing out things that were perhaps not investigated by the mod team (hence beta). I really love the work you guys have done and no amount my arse-kissing can encompass the enjoyment I'm receiving from this mod ^_^
I only toyed around with MW4, and have played in tesla pods many times. I used to play a ton of MW2:Mercenaries though, and this mod encompasses everything I loved about those and adds in the entirety of the awesomeness that is Battletech. You guys have a home run up to bat, that's for sure. I eagerly await every hotfix leading up to release!