Well, yeah, Thor in What If was if he'd never learned humility like in the first movie. Though I think he was channeling more of Hemsworth's post-Ragnarok Thor than in the older movies, at least in terms of energy/dialogue.
Thor being oblivious is kind of the point too, since otherwise there wouldn't have been any drama with Loki.
Well, I think it was a different kind of comradery in the first half of the original Thor since the rest of the time they're enemies, pretty much. Yet still valid in my opinion.Like I said, I just didn't feel it. Their brotherly comradery really didn't come across to me until Ragnarok.
Maybe comedy helps sell stuff more...