>>719118565
Alright, joking aside for a moment, I'm not sure that's possible.
The people who are really, genuinely into Shu as a character aren't actually into him for good writing or nuance or anything like that, they like him for the same reasons people like all those generic isekai anime where the main character is basically perfect and nothing poses an actual challenge to him.
To them, complex and nuanced writing is the opposite of what they want, so an actually well written character would never really take off with them in the first place.