It’s set after civil war. It’s not even a prequel technically

It seems likely that Marvel has some sort of trick up their sleeve here. I'm also not convinced we've seen the last of Tony Stark.

theres always more

I’m hoping for more!

It's setting up a new Black Widow. I think it'll at least bookend with her in present day taking up the mantle. In a First Avenger sort of way.

If you think of it through out the mcu movies there kinda background of Natasha Romanoff plus the prequel of black which will give more to her story like her long lost sister.