i am also a firm believer that carriers, in real life, are the kings of the seas now and have replaced the BBs. they offer an almost unfathomable projection of power...
another thing i don't like about the default carriers is that they set up to carry bomber units. we all know that B-17s (ie the default bomber unit) did not fly off the decks of carriers. so i often found that a bit perplexing. thus i altered it around some even more to restrict certain aircraft to the carriers and disallow others. much more like real life imho
in sum, i think carrier units are vastly underpowered in the default game. they deserve greater transport capacity imo to better reflect their tremendous ability to project their power (or their air wing's power).