In the above example I rushed to an airfield with my AA truck and shot an aircraft that was based there. Then rebased the 12 strength me109 and attacked that aircraft again. Now I would like to fly in the 10 strength me109 but when I rebase that unit it is placed out of reach of the enemy. In this case I would prefer to have the choice which hex next to the airfield I place the aircraft.
There is an other consideration. The whole thing feels a bit gamey to me. Considering that paratroopers cannot shoot after they drop and troops that invade from sea cannot shoot after the come to shore it would be consistent that aircraft cannot shoot after they rebase. No fun in that but maybe a better option.