Avengers: Age of Ultron
This film will most likely feature two Infinity Stones: Loki’s Scepter (Mind) in the possession of Baron Von Strucker and the Soul Stone gives life to the android: Vison who is created by Ultron. I think that the twins: Scarlet Witch and Quicksilver will be Inhumans to tie-in them.
At the end of Avengers: Age of Ultron the Avengers team falls apart. At the end of Avengers: Age of Ultron Thor returns to Asgard after begin informed to fix what Loki has started since Thor: The Dark World. Odin (Loki) released Lorelei during the attack of the Dark Elves on Earth. She is a prisoner in Asgard before she was released. She arrived on Earth to recruit an army for Odin (Loki) before she is captured by Sif with the aid of the Agents of S.H.I.E.L.D. Hulk gets sent to space by the Avengers because they realise he’s too overpowered and dangerous which will lead him to encounter the Guardians of the Galaxy.
A post-credits scene could feature a wide shot of The Daily Bugle, we see the back of a person and then we see a name on the desk labelled: J. Jonah Jameson (Editor in Chief), the camera pans up and we see J. K. Simmons as J. Jonah Jameson yelling: Parker! We wouldn’t see or the credited name of the actor of Peter Parker until Captain America, Civil War.
Captain America: Civil War
Following the events of the Age of Ultron, the collective governments of the world pass an act designed to regulate all superhuman activity. This polarizes opinion amongst the Avengers, causing two factions to side with Iron Man or Captain America, which causes an epic battle between former allies. We see the actor of Spider-Man unmasked on screen as a surprise to the characters and audience. At the end we could see Captain America get shot by Crossbones and die. Bucky will take his place and there will be funeral with all the heroes dressed in black, at the funeral will also be a huge sculpture of Captain America holding the American flag.
Doctor Strange
I believe that the Time Stone will be featured in Doctor Strange.
Guardians of the Galaxy
We will most likely see two stones return in Guardians, those being: the Orb (Power) in possession of Nova Prime on Xandar as well as the Aether (Reality) in possession of the Collector on Knowhere. We could see the Hulk fighting alongside the Guardians or see him in a scene similar to World War Hulk.
Thor: Ragnarok
Since Loki is disguised as Odin It’s possible that the Tesseract (Space) could be used once again since it is in possession of Loki as well as the Infinity Gauntlet.
Avengers: The Infinity Gauntlet, Part 1
This movie could also continue the Civil War storyline and the Hulk’s revenge against the Avengers but then when Thanos’ road to collect all Infinity Stones is drawing to a close the heroes consider working together once again. Thanos will gain possession of one Infinity Stone from Earth and then goes to Asgard gains possession of the Infinity Gauntlet and the movie ends as he strikes his hand in the air.
Avengers: The Infinity Gauntlet, Part 2
Like other Part 2 movies it will be the third act of the story where Thanos causes havoc across the galaxy now in possession of all the Infinity Stones and the Infinity Gauntlet; this causes all the Earth and galactic heroes join forces to face Thanos the mad titan. They could bring back Captain America back to life when one member of the Avengers/Guardians/Inhumans gains possession of the Gauntlet.