There is no difference for space requirements of what a chassis is used for, however, there are some differences with Hulls, Torsos and Fuselages in how they are used. Aircraft are most likely going to be streamlined, which reduces the amount of internal spaces allowed. There are different levels of streamlining and the amount of spaces lost.Tanks have no penalties for spaces, since there can be "Tanks on Legs." However, tanks and other ground vehicles have no energy screens, which make them vulnerable to energy weapons.
What about a "armored" hover cargo plane to drop or collect mech while in a mission. Can this be a guild bonus or availble for hire (one time use). This will still be targetable and not abel to drop the cargo off - soo much for my deposit. Any ideas?