Blades
So this is not another topic about which side is right or not. I wanna talk about what did Bethesda do to one of the coolest factions in Elder Scrolls series, at least for me. How do you feel about it, do you care or not. Maybe you think it's fine and whole thing was overexaggerated?
For me it seems people started to literally hate them to the point that they would even kill them repeatedly if they were given such chance. I once even saw such vid on YT.
Eh, I only started to like them from Oblivion (I didn't really care for them in Morrowind, since I was pretty anti-Imperials, lol). And only as a helping faction, because both my character and them had the same goals. It was just a temporary partnership there.
It isn't any different here. We work together as long as we both have a use for each other, we leave each other alone when our goals don't overlap, and we become enemies when we actively work against each other. On the personal level, I still like Esbern and want to punch Delphine, but that's separated from business. Although I still won't kill P'nax, I hop in every now and then to go say hi (and be greeted by Delphine's insults

But I gotta be honest, I'm getting so used to her bossiness that I'm starting to like her for it).
So in short, I don't really care for the change. It's character development, but now applied to a whole faction. Actually, I'm quite glad to see things change over time in the The Elder Scrolls universe. Who knows, they might become super badass spies in a future dlc. After a lot of self-reflection (and more recruitment) of course.
I get happy when I hear him talk about his new mission in life. If he's successful that means there will be less dragons I have to slay for attacking mortals. If I could, I'd tell Odahviing to do a similar recruitment process, finding dragons that will submit to me and become part of my expanded military.
You're just reversing the roles, aren't you?

The dragons first wanted to rule the humans, but now you want to rule the dragons.