Help me choose my next heir

I think both Kane and Aubie sounds interesting. But with Kane, how will a mermaid manage to live in the desert? Could be interesting, or just turn out to be impossible. I mean how far does showers stretch? But the Strangerville story has interesting gameplay. Are occults open in this world of yours, or would Kane needs to hide that he is a mermaid from others? Such as the goverment and soldiers that are so abundant in Strangerville?

As for Audrie and gameplay, I suppose that depends on how you have played Sulani so far, but there is a few things to do there so it doesn't have to be repetitive.