If I am Germany with a occupied France and Benelux and Britain is bombing France but I get air superiority over the English Channel. Will they be able to effectively bomb my territories?
Actually its more like a wormhole than hyperspace. If it was hyperspace your crystalline entities, I mean fighters, could block the next system, I mean air zone.Planes slip through hyperspace to get from Britain to France, using some futuristic technology to slip through (or around, or between) the English Channel. So air superiority over the Channel is worthless for your stated purpose.