re: Surprise character possibly confirmed for Avengers: Infinity War

They probably wouldn’t make the Surfer as powerful as he is in the comics. He would still likely be one of the most powerful characters they would introduce in the MCU. I don’t read much comics but from what I’ve learned about Surfer he’s probably one of my favorites along with Spider-Man. I think I read where he was Stan Lee’s favorite too. As far as power goes:

1. Silver Surfer
2. Captain Marvel
3. Hulk/Thor

Strictly speaking good guys there. I’m sure they would make him really powerful but still afraid of and much, much less powerful than gauntlet wielding Thanos. I’d say movie wise they make Thanos and Surfer pretty even, though Thanos is low-key pretty smart