Personally, I loved the Silver Surfer solo title from the 90s (Ron Lim for the win) and have always enjoyed Norrin Radd as a character, but as they bring the surfer forward into the MCU, I don't really care if its Norrin Radd or Shalla Bol who takes Galactus up on his offer to become the surfer. The character doesn't suffer for being one or the other. I would suspect we will still get the same through-line of a loyal herald of Galactus convinced by interacting with the FF to turn against his master to try and save earth from his hunger.

That being said, I kind of wish they weren't going Galactus/Surfer for the new movie. I also wish they weren't going Doom either. Personally, being a fan of the idea of the FF as explorers, I'd rather see them do some kind of journey to the center of the earth, or the savage land, or the negative zone or something that involves going and exploring, vs fighting a CGI space giant and his zippy friend.