i spent half an hour writing just about the exact same thing as you, then i posted just to find you got there before me...
jokes, but yeah, i totally agree, thought i thought for simplicity, all light carriers and caps (bar carrier caps) would carry interceptors good at everything (anti-fighter, anti-interceptor, anti-bomber) but not as effecient in each. then, for flavour, i thought planet based hangars and carrier caps could have a choice so as to specialise.
think about it, it gives carrier caps a purpose again, being the only mobile platform for heavy bombers, and lets you choose between keeping the skies free of heavier bombers (i.e. fighter layout) or going for the knockout (bomber layout)
i was also thinking that strikecraft armor should be dropped, maybe even completely axed (after all, they are tiny little things) making them realistically suceptible to triple A fire (though that means making flak weapons less accurate to compensate, overall, means its just as good to get lucky than to be a good shot)
my overall idea is to make SC as realistic as possible, i.e. imagine an ant running (or whatever ants do) through a burning doll house (lets get scale right) its possible to survive, but its not a walk in the park, u have to be very lucky not to have ur ass shot off. this should (i hope) balance the huge damage potential SC have in numbers with their very low survivability, it should make the first few mins of a battle crucial, then when numbers thin out the manufacturing time should balance out to keep a fair average number of SC in play