To some he would be a bit of a demon god. He's a strange, bizarrely powerful agent from an old and ritualistic religion, previously worshipped by extinct inhuman beings. His existence/prominence could be an affront to many (including those who aye'd him, assuming they understood).
It would be both amusing and sad if the writers presented him as benevolent because they couldn't understand what makes him so sinister. I think Tyrion as Hand makes Bran play for the 'good side', otherwise I'm pretty rattled by the dude.
There's always reason to be concerned whenever time-travel/precognition/omniscience is added to stories. I generally like magic being enigmatic in stories but I would have appreciated a bit more info here.
See, I have trouble following that line of reasoning regarding Yara. Bran may have honoured Dany's promise but she did not reach out for the independence her people have desired for years- same deal with Dornish Prince. They both crumble. There's no reason for ambivalence. People are conveniently resolute and then not resolute; to hop from one plot point to the next.
And there simply is no excuse for everyone except Sansa giving into the ayes so quickly. Even if the council is stacked with Starks and friends.
The only way I can see this working is by going with the 'they're sick of conflict' reason but still, for everyone to be so speedily convinced by Tyrion is absurd. This is doubly absurd because now I'm rewatching and Tyrion's speech is seemingly directed towards the audience than the other lords who would no doubt be confused.
It's a breathtaking power grab because everyone seemingly becomes blundering fools (Edmure), submissive and lacking conviction (Yara) and lacking skepticism and/or critical thinking (everyone).
The more and more I think about the episode the sillier it gets. This sort of conclusion would have never so easily occurred earlier in the show or at all. The expedient approach to the writing has been my biggest frustration over the last 2 seasons.
I love the idea of Tyrion the prisoner, presented in front of the lords, managing to convince them and then having them pick their king. And Dinklage gives it his all. But it just doesn't work.
One thing I'm interested about is seeing how this arrangement will hold in the end. Will Bran's powers prevent his rule/the peace from being disturbed? Or will human nature prevail, and the wheel be made anew and will it continue to roll on. But I'm not sure they gave this much thought considering they have fucking Bronn on the council with all his titles.
Otherwise Bran as king is an unexpected but intriguing conclusion.
EDIT:
From GRRM.
As a producer, I’ve got five shows in development at HBO (some having nothing whatsoever to do with the world of Westeros), two at Hulu, one on the History Channel. I’m involved with a number of feature projects, some based upon my own stories and books, some on material created by others. There are these short films I am hoping to make, adaptations of classic stories by one of the most brilliant, quirky, and original writers our genre has ever produced. I’ve consulted on a video game out of Japan. And then there’s Meow Wolf…
This might be the first time I have truly felt a bit hopeless about the final books. I really want the guy to succeed, not for my own interest in reading the story but I want the man to see a satisfying end to his life work.
