[Struggler]

Maybe people here haven't been following the rumors and I totally get not wanting to give disneymarvel the benefit of the doubt here, but from what I've read, at least to me, there's some logic to what they're doing. Rumors are Norrin will be in the movie. It's all but confirmed the movie will be taking place in an alternate universe(the graphic showed a more technologically stylized background.) Assuming the rumors are true and that universe will be destroyed, I can see the logic in not wanting to introduce Norrin as the surfer and then killing him off in the same movie. By having him swap roles with Shalla, you can familiarize the casual audience with his origin without the potential redundancy when you reintroduce him in the main timeline. So, when he does show up in the main timeline, it's a quick exposition dump that he switched roles with shalla and everyone will understand. In the comics Surfer didn't participate in secret wars, so im not sure how much sense it'd make to even introduce the proper version before the reboot. All that said, I'm not saying if they go this way, that it's the best decision or even a good one, I'm just attempting to throw out there an alternative train of logic.