Back in the 90's missiles where already able to navigate by landmarks and stars. GPS is nice, but it's in no way needed for Drones.
The kind of war you are talking about is exactly the kind of war where small numbers of expensive F-35's will very quickly be destroyed and how quickly new weapons can enter the battlefield will be a major issue. The vast distributed supply chain is probably the number 1 issue with F-35's for that kind of a fight.
While not great as spy satellites, using flocks of cube satellites for communications would be very hard to shut down. A single launch could put hundreds of separate targets up which would need to be individually targeted. Similarly unmanned drones can fill in for spy aircraft in tactical situations and are very cost effective.
I can't say what the modern version of total war between modern supper powers would look like, but I very much doubt it would look much like WWII.