I kinda doubt ATJ would be interested in reprising his role as Quicksilver after playing Kraven at Sony. And it'll be YEARS before the mutants start doing their thing in the MCU imo. Wanda might be on her way out by that time. And to have Pietro without Wanda would be just wrong. The only way I see Pietro getting resurrected is if ANOTHER actor plays him. I think Feige doesn't wanna turn the MCU into a "cartoon universe". If he continues to bring back characters faster than Romero ever could, then Scorsese will have won his debate against him.