I think what they should do is have Tony (off screen if need be) give Pepper her own armored suit - Rescue (they REALLY should've done that in Iron Man 3). She would then mentor two new genius girls that Tony finds. One would be the daughter of the guy who helped him build his first armor - Toni Ho, who would take her second comics codename Iron Patriot as that's been used in the MCU (by War Machine) but is now vacant. The other would be Ironheart. So instead of one Iron Man, you'd have a team of Iron Women.