Yes. India installs own EWS and networking systems to ensure this. One of the mission comupters inside the Su 30, for instance was installed by India for this purpose.Will your fighters or missiles using GLONASS be able to communicate with your Drones using GPS?
Can we expect more friendly fires?
Integrating SATCOMs is not a difficult task as it sounds, but the question here will be does the country has enough low earth orbiting satellites to ensure obstruction free communication during the whole duration.
Yeah but make it more expesive. Drones like the Byraktars have become succesful because of their low cost, people don't realize it's also because they're heavily compromised in some of those capabilties.