I have no idea if this is even possible, but as artillery shells are something that fly overhead, would it be possible to make a mod that would have a structure to shoot them down?

So, I want to use the Homeworld mod (https://mods.factorio.com/mod/homeworld-reloaded) in a PvP game. Unfortunately everything syncs between forces. Is there an easy way to separate them, or is it a total re-write situation?