It's important to have well chosen character attributes as well as many of them.
World of Warcraft would've been more successful if more character attributes were chosen at the beginning, so the later addition of resilience and spell haste would've been more fitting.
What each character attribute dictates is also very important. In older games, strength is directly related to melee attack power, where as the newer game, both strength and dexterity affect attack power with a precisely set ratio.
Good character mechanics, such as mana, rage, energy also boost the attributes's appeal, good compliments would boost successfulness.
