Going to be much more complex narratives in the future mcu. Teams will be more segregated that you'd think.
On the cosmic, lots of new stuff is planned aside from the Eternals. Gotg 3 will introduce Adam Warlock as teased, Beta Ray Bill, High Evolutionary, Lylla (which will break the cannon), Moondragon. Quasar and Nova will also be appearing in the mcu.
Thor will be in gotg3, but after that the remaining guardians will be integrated in Thor 4.
Sony deal will factor a lot for the future since they want to use Norman Osborn as on overarching villain and have planned Siege, Dark Reign, Dark Avengers storylines.
Many past villains are going to band under Thunderbolt Ross as Thunderbolts including Zemo who'd be in Disney show, Ghost, Hammer, Abomination ect.
They are also leading towards the Young Avengers with Iron Lad, Kate Bishop, Photon, Stature ect. Though Antman 3 has the possibility of being relegated a tv show, it's going to happen. They also have plans for Kang the Conqueror for being another huge villain for the Avengers.
No Xmen plans right now. FF4 isn't happening anytime soon, but expect Galactus to happen once the former comes into play. Doctor Strange 2 will bring in Nightmare, Clea, Brother Voodom, and Shuma Gorath is planned for another.
Black Panther 2 will bring in Namor and the Atlantis. Not exactly set, but there are plans for Alpha Flight, Power Pack and Chakra.
Captain Marvel 2 will introduce bad skrulls as well as Shiar. Falcon and White Wolf both would be carrying on Caps legacy. Plus they're planning a Cap series entailing his journey. There are no contracts, but expect Chris Evans to return in the huge event.
Black Widow will present the farewell as well as backstory of Natasha while introducing Yelena Belova and Taskmaster. Deadpool will exist in its own corner but will be in teamups. Also big plans for the Hulk in the future, his story ain't over yet.