I want to pick premades on who is interesting and not on the actual lore

Basically I think I should find the Wainwrights and roomies more forgettable and that i should find other sims memorable, and that when im thinking of a story with premade sims in it, i shouldnt really think in terms of them having a past before the game, i should think of them as more like archetypes or something, every version of a specific sims is canon, i want to be able to use premade sims and deage or age them up 🆙 and have them interact in ways that are different than the actual game progression and more based on who is cool and memorable, who i like the best. And I want to play it less like im going a vacation in the ideal world, i want to be able to write story where people cheat on each other and kill each other. Or at least something where not everything is picture perfect.

It came to mind because i was thinking of young adult frida goth running away from the goth manor. And i was thinking of Blair presumably being a toddler then (my thought was, basically I think the altos didnt live in Sunset Valley until holly is teen? But since gunther and Mortimer also know Boyd at game start, then Frida propably knew Boyd and even starts up with shoes with the same pattern as Boyd’s jacket, but people in twinbrook have that same pattern on their beds, other twinbrooks beds have Leopard print or fluffy looking dark red or dark blue print, or plaid print. You could say Boyd gave Frida the shoes as a parting gift and even talked to Cheezeysims about that. Heck you could even say doreen caliente is also the grandmom of Susan Wainwright making Susan half cousins to zack and Zoe durwood. I even entertained Susan Wainwright adopting Daydream Ivy. So i imagined frida goth going back to SVPD and recognizing Blair, or even staying in Sunset Valley all this time!? Also Lolita Goth is ancestor to the goth and ts4 gomez through ravendancer goth?!? Who in sims 4 is a black woman?!?) then i realized why it should be Blair since there are better sims which would make such a story less boring and It wouldnt necessarily became like the actual sims 3 game start anyway.