This plugin repurposes the stat boxes for all classes to implement the base stat system from the Pokémon series. This plugin also adds the other aspects of stat calculation to the equation as well. (Full instructions in the help section of the plugin).
Features:
Perfectly recreates the stat formula from the Pokémon Series
All battlers have IVs, EVs and Natures
Can create items that change the number of EVs an actor has
Options to display the Nature on the Status Screen