Mission accomplished - what should the after credits scene be?

[Tg11]

If this is a prequel as wildly expected:

Spoiler: My post credit scene

Vomir. Standing over a high cliff, Cap and Red Skull are philosophizing. As the quick talks end, Cap glares into the dark abyss below, then lets go of the amber stone that he has been holding in his palm. As the glowing stone falls, it slowly fades and completely goes out of sight before reaching the bottom, where the lifeless BW body lies. She awakes, breathing heavily trying to recollect what has happened. She checks her wrist, on which the time device is still attached. Without hesitating she activates it, and disappears.

Perfect

 

[TonyStank1]

Here’s my idea...

Hawkeye at Widow’s grave at the cemetery. Talks about how much he and his family misses her and that there’s this kid he knows who is is the best archer other than him that he’s seen (Set up for Kate Bishop in the Hawkeye series for Disney +). Hawkeye places some flowers by the gravestone then turns and leaves.
Watching from afar and out of Hawkeye’s view, we see a hooded figure. Pan around to see who it is and we are shocked to see Widow alive and well. Is this another Black Widow from an alternate universe? Is this a Skrull in disguise? Who knows.

 

[Mysteryman]

"Good Afternoon Natasha,this is your mission, should you choose to accept it".