Well Natsu's ninjutsu and Pat and Pyrrah's styles are much better gameplay wise than the originals, but their character designs are indeed weaker. Xiba and Leixia are both worse personality and game play wise, especially Leixia since they removed Xianghua's multiple parries and turned her into a nerfed version of her mother. Xiba is just a half baked Seung Mina and kilik hybrid more accessible to beginners since he's so mash friendly.