@Kfunk:
Katakuri is some nice gap moe character though. He looks and acts like the emotionless stone cold bad guy but at the same time he gets angry when Luffy try to fight his siblings, but this isnt adorable thing. He literally call his little brothers and little sisters cute.
But for some reason it wasnt translated in mangastream and jaiminibox made him say precious, which isnt the same.
Actually, I thought that kawaii can mean both cute and precious? So in this case it would be more the latter?
Anyway, I agree with you that Katakuri being affectionate towards his family makes him more interesting. Some may call him bland, and going by his appearance he does seem your average badass cliché. However, this is contrasted by the way he treats his family, and even by some things he says. For example, he may be all badass, too-cool-for you type, but he still calls Perospero "Peros-nii", which is IMO ridiculously adorable. Compare this with, say, Daifuku, who instead calls Katakuri just by his name even though Daifuku is younger. These things get lost in translation I'm afraid, but do add some interesting nuances to the character.