Ryan Stark in the Marvel Cinematic Universe

A marvel MCU fan got reincarnated in the Marvel Cinematic Universe as Ryan Stark, Son of Tony Stark. With a mind capable of creating every kind of concept you have, what kind of changes will happen to those who's fate had already been decided from the beginning.!! . . . . (Inspired by the Chinese fanfic named Marvel Little Genius) [All characters except the OC belongs to their respective creator's] {This is the Rework version with slight grammatical changes and mainly to post it in the official Fanfic genre}