I'm thinking of using a woodcutter axe/sniper rifle (or crossbow) combo for Will and maybe something involving a katana for Brooke. Still no idea for semblances, but I like the theory that they are based off of the character's pasts and hardships (i.e: Yang's is anger based, Weiss has family problems and hers is hereditary, Ruby had to "speed" through life because of her mother's death/hero role, etc).