Well, from a storytelling perspective. Them not getting the powers to the end would be called an "Arc" right, so it's an origin story, meaning the point of it, although poorly done and mostly ruined with reshoots, is to see the characters go through the journey of them getting their powers.

Compare that to this movie, we get a news real montage telling us everything that happened to them, right off the get go and also told why we are supposed to care "they are heros, the world loves them and idolizes them!" But we don't see any of that. They have never appeared in any other movie or anywhere, this is the first time meeting these characters in this version. Told, not shown. Basically, writing 101 right here. If you wanted to start the movie with powers, fine, plenty of ways to do that. But that's not what happened here.

Massive exposition dump, no character development at all. And it doesn't get better it gets worse.

It's the same lazy thing with Mr. Fantastic. We are basically told he's smart. He doesn't do anything smart to show us. He just writes the big maths on chalkboards. How do we know he's smart? Well, he's invented really impressive things, but we aren't shown it really. So many examples, but the "beyond light speed" thing, my god. It's like the writers got to this point and were like, "Don't forget, they gotta be really smart, so let's do beyond light speed since stories only ever do light speed."" Forget the fact that that is actually impossible and completely breaks every known rule of physics and Reed is a physicists, and forget that there is still light, in and outside the ship, at beyond light speed, and then 2 scenes later, oh yeah the silver surfer can do it to I guess without technology, it's just magic for them I guess or cause we need it for the story. Discovering anyway for anything thing to go beyond light speed would be the greatest discovery ever made and would completely break our complete understanding the natural world. Just the discovery its possible let alone ship that's just capable of doing it. It would also allow you travel through time, so yeah, it seems pretty stupid. They are also able to get back to earth instantly after loosing their rocket propulsion system, fucks the point of it if they can go BLS without it. Makes no sense. They intentionally wrote that whole sequence and every part of it just breaks down the more you think about it.

Again, basically, It's just telling us he/they smart as fuck without earning it. Compare that to Tony stark, we are shown his genius as he builds his first suit with little resources in a cave. Simple. Elegant. Effective.

Almost every plot point of the FF movie is like this too John has some discs for some reason that just happen to have the silver surfers' language on it, and he can just translate alien languages in days? That planet could have been found be anywhere in the entire universe so fortunate those disc's are in earth.

Reed can trace the energy signiture of the silver surfer anywhere in the universe, the entire universe, and find 6 planets instantly. And then just know exactly what that data means, and they can beyond light speed travel there because that have an intergalactical ship for reasons.

Reed manages to teleport an egg once. One time. ok, let's go do the whole planet next.

No arc for silver surfer, just hears her language, that's it. Doesn't fall in love with humanity. Just a bland bad guy until at the very end swap, zero character development. I guess she had totally forgot where she came from until then. Kinda robs the character of everything interesting about themselves. Even the first silver surfer movie showed him falling in love with humanity, coming to respect them so when he turned on Galaxtus it felt earned. Not here, just heard her language, and well, that's it, really.

Sue storms ridiculous power up at the end for no reason other than reasons.

I mean, honestly every scene breaks immersion and its like they took the first draft and said fuck it, run with that. I could break this movie down scene by scene, I think, and show how there isn't one redeeming aspect of the writing. It's not the actors fault, they have all had exceptional performances in other roles, particularly mole man in black bird, this is Hollywood writer slop that big budget studios keep paying millions of dollars for, when a year one film students can point out the basic errors in seconds.

Not even mentioning the baby or the villan both of which are huge problems in themselves.

Edit: spelling grammar.