It can be easily fulfilled by adding a secondary weapon with a focus on a different play style. Ex. Marauders can have access to hammers which provide higher base damage but at a much lower auto attack and delay. Paladins already have this in place with the 3 different types of shields (small, meduim, tower). There doesn't have to be an outright skill set change but rather give the player the option to choose which will be better in which scenario.