As a boot, I'd like to see my seargent calling in air support from his laptop, rather than hope and pray that the Death Santa and his hogs are around. Furthermore, I wouldn't want that 30mm cannon going off by my buddies, or those who we are trying to protect- not vaporize!
With 10 drones (which have great cameras by the way: FLIR, night vision and TV), every company in the battalion can have at least one, and smaller ones can have 2 or three each! Instead of having to call the Colonel, I can just give a holler to the Captain.
With A-10's:
Sarge: Hey, look! Hajji has formed an angry mob!
Me: Right, I'll get the radio operator. Hey Luke! Is the Colonel awake yet?
Luke: Gimme a minute!
Radio: We're sorry, the number you have dialed is no longer availible
Luke: Son of a *****!
Sarge: Looks like no Hogs today, boys, RUN!
With Drones:
Sarge: Hey, look! It's an angry mob!
Me: Captain! We could use some help with the mob!
Captain: *Opens Laptop* *click, click*
Pilot: Eye-in-the-sky-that-makes-Hajjis-cry pain delivery service, how may I help you?
Captain: Yes, we'd like a double order of

with a side of awesome sauce
Pilot: *Click* *Click*
BOOM!
See the difference?
-Penguin