[Listy]

Hate to contradict you MOBhack... But:
You can do it in this game, but it gets exensive fast. One of the First experiments I did along with chemical weapons, was a Smart artillery round.

This ONLY works on turn 0.
A no Icon plane carrying CLass 17, Range 255 weapons of the right stats (Vis 40 on the plane and a good FAO will help alot). If you want a troop of guns fireing 2, 3 or 4 rounds at one hex, then you just add another weapon to the plane until you get the right number.
If the plane has crew 0. It arrives before almost all AA fire (A few LR area SAMs are the exeption), lobs the smart shells into the battlefeild, then crashes, and wastes no AA fire.

Not the best way of modding the weapons, but the one that works for the start of a senario. As MOBhack say's not realy pratical for the game as a whole.

EDIT: Just had a thought, maybe make it a bomber class instead that might work better than an attack plane class.