Like almost everything I build it comes down to like 60% aesthetics, 30% history and 10% unknown something.
An example, the only IJN vessel in my stash is Musashi. Roughly the same lines as Yamato (I prefer her lines because her AA suite isn’t as large) but less history behind her for most people but for me her end is what draws me to her over Yamato. It just seems so sad and pointless.
I love the look of the Takao’s. That brutish forward superstructure appeals to me far more than the Mogami’s. I couldn’t care less about their combat records, they just look cool to me.
But history can play a big part for me. I adore the USS Texas, not for her looks but for her history and service. I prefer the Scharnhorst’s over the Bismarck’s because they had more combat duties.
Modern warships are all aesthetic for me. Most of them have no real combat service to speak of. I like CVN-65 because of her block of a island, not for anything else she has done. I adore my little Rowangarth tug because I got to paint it in bright orange. It has no historical relevance, its just cool.
I would love to get and build more IJN ships to be sure but they are generally very expensive which definitely decreases their allure.