The fastest way to have those sorts of mechanics in EiRR as it stands at the moment would be to have at least 1 type of aircraft based off-map for every doctrine with up to 2-3 uses at a relatively low price.
Proceed to then make AA capable vehicles more effective... Then voila, short term implementation until something that is more shiny comes along.
all recons, or awareness abilities could easily have a recon style plane attached. its all about figuring out a way to make howie style off maps to somehow have planes attached to them, which tbh we could have forward observer units that can be killed for a similar effect as well.