To make it logical they cannot be VTOLs or anything advanced.
They should be kite or balloon.
As someone mentioned, they could be available each few minutes from HQ.
Then they could be send one way and see around 20 tiles and send that data to HQ so it will show up on minimap.
This would be only one way moving, eventually they would drift out from map and "die".
They shouldn't have any weapon, probably shouldn't be possible to destroy (although AA probably should be able to kill them, maybe...) and visible to enemies.
I'm only unsure what if we don't use them for some time, there should be available always one of we could wait to have few?
Also, we currently don't have wind system, right?
It could affect them, to make it more interesting.
Maybe also VTOLs.
Also it could be optional only, for those who want to try something new.


