The MCU recently brought back a villain from the Iron Man movies, and in doing so demonstrated exactly what needs to happen in Armor Wars. Armor Wars is an upcoming MCU movie that will focus on Tony Stark's legacy through the perspective of his best friend Rhodey, who will also need to come to terms with Stark's death. Riri Williams, meanwhile, will likely step in to fill Tony Stark's shoes with her take on his iconic armor and tech. The comic book run of the same name focused on Tony Stark dealing with those who misappropriate his tech for unscrupulous means, a common theme throughout Iron Man's MCU timeline.
https://screenrant.com/mcu-armor-wars-iron-man-villain-return-need/