Airstrikes

i was thinking, how about implementing the ability to call in airstrikes, as a item or a ability to a certain/few marines rosters. with a reasonable cooldown?

additions welcome, comments are as well

and because the amount of abilities per unit are limited. why not just add it as an item that can be picked up, and it has charges.

My reasoning for making airstrikes not available was:

1) Airstrikes are powerful. Very powerful. They'd be incredibly strong and thus imbalanced. Making them weak would look bad, and giving them a very long recharge time would make them boring.

2) I found that often times I wanted to decide where the plane was coming from so I could throw the bombs more accurately.
But there's just no convenient way for the users to make that decision.
A control like in Company of Heroes would be great, but Wc3 can't do something like that.