Hm, I dunno xD
This has been proposed already many times, as already said by Snib.
But I think there might be two problems, or maybe one, to tackle, which is the AI of these fighter-ships and maybe being able to give them commands.
So far, the fighter-drones launched by the Dreadnoughts are somewhat unpredictable on what they're targeting.
But I like the idea of a specific Carrier-Class and I think the DEVs already know that the wish for such a class exists, so they might be thinking about this^^