Match the damage style
Traits are part of the character setup described by the source wiki. Its main advice is to consider how a trait works with your chosen weapon and skills. A trait that supports your main weapon is more useful to a focused build than an unplanned change.
Do not rush a reroll
The source recommends waiting until you understand your preferred weapon and dungeon role before spending rerolls. If you have a weapon you intend to keep developing, save Trait Rerolls for a trait that does not fit it.
Review related choices
A trait is not considered in isolation: compare it with your weapon, skill choices and accessories. The source gives no verified trait probabilities or named best-in-slot ranking, so this page does not claim one.