It did lead to swapping characters, at level 6! I went from Warforged Artificer to Gnome "Inventor" (she's a wizard, but I reskin all of the spells as tinkered inventions)
As for the “main character-y” stuff… I basically hid the entire backstory from the group for 6 months of play, my character was worried that agents of her captors might track her down and put an end to her one shot at a rescue, and since their an organization with active spies all over the place, she was hiding everything until she was sure she could trust the group.
Over time, I told different characters part of the story, in confidence, which lead to (at one point) every other PC in the group having a completely contrasting explanation of what my “deal” was, under instructions to not tell anyone else.
Once I actually came clean and explained the situation to them, they organized a rescue op and saved her in 3 sessions. Less of a “main character” result and more of a “character side-plot” outcome - everyone else has their own personal side stories, and some of them are pretty involved…