I think it honestly just wants to survive. The nomad way of life that created him seems to be disappearing and the mountain god is an asshole so the only other option he has is us.
Mhm, mhm, that may be the case.
But if I were to guess, apart of the reason the nomad way of life is disappearing is indirectly due to some of Proud Water's actions (not to say that he's the sole or biggest cause). And I wouldn't call it too far-fetched for him to look for revenge, whether it's on the Mountain or Waters.
Of course, that's just speculation from evidence and context clues or somethin'.
He is too weak to plan anything right now so I would not worry right now.
I disagree with you. He's too weak to do anything, yep. But not to plan anything. Always worry for competition and uncertain allies, because that will most likely keep PS alive.
I wonder if we can "drain" other spirits, absorbing their power and perhaps even some of their Domain?
Well here it is ladies and gentleman, the first post that mentions cannibalism.
It probably is possible in some form if I had to guess. Maybe even through human means, like annexing a city where another person has their domain/major base at.
On another note, seriously people, are you just going to reject the land?
I hear you all talking about domains, well there's one for the taking! Blessin's and all.
Even this update made mention of the fact that the land and forests have been disregarded in favor of the fish, and if that isn't a hint to try expanding their and exerting some control then I may not know what is.