Avengers and Overwatch Crossover Challenge
As stated in the summary the Avengers are stuck in the Overwatch universe and will eventually meet each other and get help from Overwatch to get home. Immediately after the fight with Dr. Doom the Avengers arrive roughly 3 months before the events of "Recall". The Avengers find an abandoned Overwatch base and use the tech to upgrade there gear. While the Avengers are doing there own thing Dr. Doom has also made his way into the world of Overwatch and he will be a member of Talon.
After Recall the Avengers help Winston and Tracer rebuild Overwatch and recruit new and old members. You could also have Mondatta live by having one of the Avengers accompany Tracer to the rally. Still have Doomfist successfully escape prison and make his way to Venice to meet with the Talon Council that now has Dr. Doom on it.
So for the Avengers the roster should be Cap, Ironman, Black Widow, Hawkeye, Spider-man, Scarlet Witch, Quicksilver and Falcon. However this roster can be changed if you want just don't bring in anyone who can just defeat everyone in Overwatch without even trying for example Hulk, Thor, or just anyone who can break a planet.
I think it will be interesting to see how each of these characters reacts to one another. So review or PM me if you want to take this challenge.