While being able to split up your fighter wings is an interesting idea, it's kindof orthogonal to my original point of changing the AI to not send its fighters on obvious suicide runs.
Also, while it might work for AI-controlled carriers, I think it'd get a bit clunky for a player-controlled carrier. It's already tricky enough to get fighters going at one target while firing missiles at a different target, and adding multiple different fighter targets would just get increasingly problematic to manage.
That said, adding an option for specifying "How should the AI use this carrier's fighters?" is something I'd be entirely in favor of, especially for battlecarriers - the Defensive Targeting Array hullmod is a very nice option to have, but it'd also be nice to have something that told the AI to support itself with its fighters while not clipping them to zero roaming range - you can imagine, for example, a battlecarrier that focuses on HE-type weaponry and then uses longbows to get its kinetic damage - but the AI currently doesn't work for that, since it'll send its fighters off at some random target that isn't what it's shooting at. (Or, if you give it longbows with DTA, it'll only get its kinetic damage at point-blank range.)