This is a critical tool to have if your Pokemon fan game project plans to focus on rebalancing Pokemon's metagame. This paired with the other Python tools this plugin author has made saves a massive amount of time and allows more time to be put into making a Pokemon fan game.
Any time! There are over 1000 Pokemon, to manually nerf and buff each one would take an absurd amount of time. This is quick, and still leaves room for specific Pokemon buffs. Reducing some stats to boost others, increasing or reducing BST, changing abilities, you can do anything.