Can you make a glider spawning glider? Then you can have a glider train!
Yo dawg i heard you liked gliders, so i put a glider in your glider so you can glide as you glide.
Also, is it possible to replace a top MG with a tank? Then you can have a tower of Panthers! Or at least a Panther turret which has a top MG which is a Panther turret too.
That would require changing the model.
Tho you can change to projectile of weapons so that all the mgs shoot shells.