Always remember that the original characters have agency.
In Frederick Steiner and the Man Who Knew Too Little, Max - the SI - spends the first couple of years mostly just dealing with mundane challenges of being a person with no local records or memory. The plot engages when Frederick arrives to drag him along, and it's mostly Frederick who drives events from there, making Max his secretary, a mechwarrior and later his agent. Max has foreknowledge, but otherwise he's a mild-mannered and mildly competent middle-aged fan of the setting.
In Wearing Robert's Crown the SI's perspective is never shown and he flat-out dies later, while the story continues without him. He's made a difference, a huge number of them, but the world is a large and complex place with other people who are just as important on every level.
In Frederick Steiner and the Man Who Knew Too Little, Max - the SI - spends the first couple of years mostly just dealing with mundane challenges of being a person with no local records or memory. The plot engages when Frederick arrives to drag him along, and it's mostly Frederick who drives events from there, making Max his secretary, a mechwarrior and later his agent. Max has foreknowledge, but otherwise he's a mild-mannered and mildly competent middle-aged fan of the setting.
In Wearing Robert's Crown the SI's perspective is never shown and he flat-out dies later, while the story continues without him. He's made a difference, a huge number of them, but the world is a large and complex place with other people who are just as important on every level.