While technically not a skill, light and heavy attacks wise, would be solid to add them into destro staff skill line, at the top, not as a skill to drag to our skill bars, but instead, for the purpose of applying skill styles to them as well.
Example: For lightning LA/HA, what about a harrowstorm red lightning visual? Or a fiery lightning visual? Fire staves, what about a cold harbour fire visual? Frost staves, could swing more toward pure white snowballs, or more deep blue, or maybe go off the rails and try an black onyx kind of visual snowball.