With the much-anticipated release of Borderlands 4 coming soon, what existing characters should not return for the sequel?

despite the popularity of Borderlands 2’s DLC heroes that were added later. I asked Gearbox why they did this, and they said their data showed that most people stuck with a main character or two ...

Furthermore, it's worth noting that Vault Hunters in past games had some kind of customization, like with the head skins for Borderlands 2 characters or the more complex personalization introduced ...