Multiple Action Skills
Previous Borderlands titles have always saddled a character with a single Action Skill. Borderlands 3 mixes this up by providing three Action Skills for each Vault Hunter to choose from. Zane the Operative can have two Action Skills at once with their own respective augments. Meanwhile, Moze can summon the Iron Bear mech who has different hard points for weapons like flame-throwers, railguns, gatling guns and whatnot. Amara the Siren can choose one Action Skill, which can work differently and accept augments (not to mention changing the element of the the Skill). There’s plenty of customization and depth in each skill tree, leading to much more build diversity.