I find myself carting Viv for Knight Enchanter goodness, Blackwell or Cass (Iron Bull for dragon hunts) and either Sera/Varric  for the ranged fun times. My canon!inquisitor is a dual weapon specialist, so I'm kind of stuck party comp wise. Sometimes I pop Dorian in my ranged rogue slot, but I don't have too much flex. I almost never use [S]racist grandpa [/s] Solas or Cole. I adore Cole, but two melee rogues never works well on this character. I do love all mage parties tho, if only for the crazy awesome sass.