10 WHAT IF…? Comics Marvel Needs To Adapt For Season 2
1. What If... Thanos Joined The Avengers?
When Thanos was defeated during the Battle of Earth, the Infinity Saga that spanned the previous 11 years was brought to a close. However, despite the Mad Titan's demise thanks to a snap of Tony Stark's fingers, the MCU doesn't appear to be letting the character go just let.
There are rumours of a young Thanos making an appearance in Eternals, and the character made three separate appearances in the first season of What If...?, though two were non speaking roles. There is no reason to think that this won't carry on, and that the Mad Titan couldn't appear in the show's second season.
During the Infinity event of 2015, Marvel released a what if story detailing what would happen if Thanos joined the Avengers. He helped Earth's Mightiest Heroes fight against the invading Builders, and gained the trust of the likes of Thor and Captain Marvel, but never Captain America.
In the end, Cap and Thanos came to blows over the latter's true intentions, with Steve Rogers paying the ultimate price for defeat. Thanos took Cap's shield and led the Avengers in his place, claiming the hero was killed in action, and eventually joined the Illuminati in an effort to ensure that their universe was the last one standing.