3. Tony Stark becomes the new Jarvis
After Marvel Comics’ Civil War 2, Captain Marvel beat Iron Man brain-dead. Stark, being the futurist that he is, had a contingency plan for his death. He had his mind downloaded and became artificial intelligence. As A.I., Stark helped Riri Williams take over the Iron Man mantle and she became Iron Heart. It helped train her to make decisions while she was getting used to being a hero.
With the idea that Tony Stark is going to die in Avengers: Endgame, this is a way to keep Stark involved while not having him be a main focus. Also, this could help phase out Tony Stark all together. Everyone loves Robert Downey Jr., but he can’t be Iron Man forever. Eventually someone is going to have to take his place. Riri Williams may not be ready for the MCU, but Peter Parker is here and prepared.
Crazy Scale: 7
As great as idea as this is, it won’t happen in Avengers: Endgame or in the next MCU movie in the current phase. If anything, this happens in the third Spider-Man movie. Something like this takes time to do right. If this is rushed then it won’t work. Although, a cut scene after Spider-Man: Far from Home could reveal A.I. in Spider-Man’s mask as a contingency plan from Tony Stark is possible.