It's wishful thinking

I was devastated when they sacrificed Nat at the bottom of that cliff almost in the same pose as Gamora

There are few enough women Avengers and Nat was the only original female representative

It's justice to bring her back and let her live out the life she earned!

There has to be fanfiction about this!

If you find one let me know!

Weren't the experiments Isaiah Bradley was involved in derived from serum donated from all the blood Steve gave to be studied? I just assumed that. But, maybe they were always trying to reinvent their own versions?

I still haven't figured out how he puts the soul stone back

And wouldn't he get Natasha back if he does?

He and Peggy must have had an amazing life in a wonderful world. And multiverse/crosstime travel has been a staple of Marvel comics since Days of Future Past and of course The Cross Time Caper. Changing time creates a new timeline, just like the Old One told Banner even in the MCU itself!

Steve may have abandoned Bucky, whichever way you look at it, but in his timeline he went back and saved him from the beginning, Tony's parents weren't murdered, Kennedy wasn't shot, Hydra was eliminated from shield.

The perfect timeline theory! I had so many arguments about this when Endgame first dropped and I was soooo disappointed by the ending, but a lot of people have moved on so it's really nice that people are still thinking about it.