I like how with one piece they take the best qualities of a power or ability and really bring it to light! Like things you wouldn't even really think about or associate with the main power that the character has,like enel is one of the coolest lightning based characters. The characters have unique and cool techniques,like with most powers that would normally be considered silly would now be pretty badass depending on what it is tbh. It's not only bringing out the best parts but also making it fit with the character and getting creative,like a cool technique that isn't common but fits and makes sense