I just want to say a few words regarding scale.
It seems like you are making an operational level game and your units are division (xx), brigade (x), and perhaps regiment (|||).
Littoral Commander: Indo-Pacific is a grand-tactical level game, with formations on the scale of platoons (***). In that system, things like drones, long-range systems - such as Man-Pads, tactical air support, and so on, are modelled through Joint-Capability Cards, which makes sense on that scale. E.g., it makes sense to distinguish between a platoon that has Stinger missiles and one that does not have a similar capability.
On an operational scale, such tactical capabilities are probably best abstracted into an overall capability of a unit.
E.g., if an infantry division has significant long-range firepower - such as rocket artillery, then it could have a long range (2 to 3 hexes) attack factor, while other infantry divisions will not have such a factor.
On the other hand, it makes little sense to model drone capability - rather that capability would be subsumed under an overall attack factor.
For example, Russian combined arms divisions at this point in time, have developed significant drone capabilities that may give them an edge against NATO armoured infantry divisions, who may lack behind in the drone domain. Thus the Russian unit could have AF=3 while the NATO unit would have AF=2. On the other hand, a NATO armoured infantry division may have better Command-and-Control (C2) or equipment (Puma versus BMP-3) than its Russian counter-part, which would offset the lesser drone capability, and the AFs would equalise.
In the other end of the spectrum, strategic considerations, such as a country’s willingness to see their young men and women come home in body-bags, is also best modelled in an abstract fashion, since the on the operational level, those concerns are somewhat peripheral.
One could model the acceptance of attrition by imposing some sort of victory condition. E.g., if the NATO faction looses more than 10% of its combined force, then the Russian faction has won, while the same threshold would be 20% for the Russian faction.
These are my 2¢ on the topic. Perhaps you should start a thread in the BoardGameGeek wargame sub-domain general forum - I am certain that there will be many people chiming in with their thoughts on the subject - including seasoned wargame designers and amatours such as myself 
Yours,
Christian