When I first saw the Darth Vader and Stormtrooper Funko Pops, I didn't liked how they placed the iconic round eyes on the helmet. I know it's the trademark for a Pop but just doesn't work. Good thing these days Funko became flexible with the design, and the Star Wars Force Awakens Pops were gorgeously made.
But since these characters are are just too iconic for Star Wars, I think they deserve to be updated. I sculpted over the round eyes and make the adjustments to make Darth Vader more sinister rather than being cute, and the Stormtroopers look more like trooper rather than look like a Catfish in helmet.
They also had a full repaint with added details and I also replaced Darth Vaders lightsaber from my Gunpla RX-78. The light effects though is only added thru photoshop for presentation purposes.