"within a bubble of the player"
Good and the new technology should be more focus on that.
"where as in DCS World if you put a tank battle on the other side of the map, its a tank battle going on on the other side of the map"
This is where improvements should be focus as well, Should have a way to ovoid calculating something that is way too far but giving just infos at a closer range
Those need to be seriously improved.. This is so bad that if you want to built a server to run DCS you will need a strong strong PC $$$ that run ONLY DCS.. This is absurd . So the bubble is practically something that should be seriously regarded