Then last year, Mark Ruffalo mentioned that the Bruce Banner/Hulk consciousness has started to meld a little in Thor: Ragnarok.
That doesn’t mean that Hulk will be the genius that Banner is, but it does suggest that he won’t be nearly as driven by rage as he has been in the past.
During the final battle against Ultron in Avengers: Age of Ultron, Hulk boarded the Quinjet and flew off to parts unknown so he wouldn’t put Black Widow in danger.
It was one of the few times the Green Goliath has been calm, and arguably the first time he was logical.