I've never been a fan marvel: let's start there. I've never read the comics, didn't even watch the first movie. This is my first introduction to the Fantastic Four. Take this as an outsider's review. (I made sure to make this spoiler free it you haven't watched the movie!)
Let's begin with the narrative. The pacing was good! The first scene, while not how you'd usually begin a story, was a unique way to make the audience grow closer to the characters than to their abilities. The action doesn't feel forced once it begins, the introduction and rising action transition smoothly. The amount of times Galactus actually appears I can count on my fingers, but that is enough to show him as a real threat. The... silver surfer I believe she's called? She's more than a threat in and of herself, which only makes her backstory's reveal all the more shocking. In my humble opinion, her storyline was handled excelently. That scene towards the end with the recordings? Chills.
That mixed with the extraordinary, retrofuturistic setting, the fantastic (pun intended) soundtrack, and overall great protrayal of each character create a deep and immersive story for people of all ages to enjoy. If you haven't watched the movie, I certainly reccomend you give it a shot! It is quite refreshing and hobestly, a step in the right direction for Marvel.
SPOILER ALERT!!!!!
My only complaint is the baby bringing Sue from the dead. It felt forced, didn't really add any shock value and has gotten too old at this point. Wasn't it easier to not kill her in the first place? But tjat aside, great movie in general.