I am not enthusiastic about another kidnapping arc too. However, if Kusanagi has some idea and executes it well, it may still be good.
One person had an idea that they may find Yona too precious to keep her as an ordinary prisoner and instead they will try to force her into marriage, I suppose, with Kurevo, since he conquered Li-Hazara. As a result, Hak with the dragons will need to ask Soo-won for help, which can be done, because the greater the distance from Hiryuu castle, the greater problem they have with their power, so attacking a castle in Kai may be not so easy even for them and Soo-won and his allies like Keishuk should not like the idea of a foreign dude, especially one who has intention of conquering Kouka, to legitimize his claims to the throne.
I like this idea, because if executed well, it means that:
The kidnapping would not feel so repetitive.
It can give a lot of spotlight and growth to both Hak and Soo-won.
It can lead to some intensive and interesting interactions between Hak and Soo-won.
It all depends on whether Kusanagi has an interesting idea and executes it well.
Or maybe once they find out more about Yona, they will not kidnap her, but use information about her in another way like starting a war with Kouka in her name. Kurevo would do it anyway, but this way he may sow propaganda that he is the good guy who fights the evil usurper Soo-won. This way he can mess a lot with the people of the Fire Tribe, who admire and almost worship Yona, but have too limited knowledge about her to realise that Kurevo is selling them bullshit.
