Doing a rewatch of the MCU films. A few films into the "Multiverse Saga". First its taken a couple of films just to get to the Multiverse.
Black Widow and
the Eternals were pretty light on the subject. But who am I to question how Marvel/Disney+ sorts their films? Some Infinity light films in the "Infinity Saga" too.
The post and mid credit scenes are intriguing me. I'm curious as to when and if they will be addressed.
- The one from Black Widow were addressed in Hawkeye and will follow up no doubt in Thunderbolts*
- Shang-Chi has the mysterious origins of the Ten Rings and the signal in to space. Plus we have Xu Xialing taking of the the Ten Rings organization. Possibilities of some space born hijinks and some down to earth stuff. (Daredevil?)
- In The Eternals we meet Eros/Starfox from a different branch of Eternals, who is Thanos' brother. Not sure The Eternals will get a follow up. But it's possible the Guardians and Thor might, so he could be threaded into those. Captain Marvel is also a cosmic character and in the comics Eros was introduced there. We also have Dane Whitman getting the Ebony Blade with Blade off camera issuing a warning. Of course that was a few Blade scripts, directors and actors ago. Not too keen on tying the Ebony Blade and the character Blade together. Seems a stretch.
- Spider-Man No Way Home feature an appearance by Venom from the Sony-verse who leaves a bit of himself behind. Set up for an MCU Venom, possibly in the next Spider-Man film. Or even Secret Wars.
- In Doctor Strange ITMOM, Strange meets Clea and heads to the Dark Dimension. So the next Strange film might cover that.
- Thor: Love and Thunder features Zeus sending Hercules to get vengeance on Thor. Seems like some Secret Wars potential to me.
- Black Panther Wakanda Forever's scene is somewhat self contained and introduced T'Challa's son. Barring a major time jump he'll be a kid for the foreseeable future.
- Ant-Man and the Wasp: Quantumania. I guess we all know how problematic this one's post credit scenes are.

- Guardians of the Galaxy Vol. 3. Self contained for the most part. The line up seen could show up in Secret Wars.
- The Marvels. Monica winds up in a different universe where her mother is alive and is a hero named Binary who is affiliated with the X-Men of that reality (the FoX-men?) Once again it sounds like setup for Secret Wars.
Of course everything and everyone on this list could be rolled into
Secret Wars and
Doomsday.