I love how Showdown shows the enemy pokemon's possible speed stats, and its much easier than looking it up anytime you need that info. However, I think that it would be cool if it showed speed states with a choice scarf added on. Maybe off to the side of the possible speed stats it could say: If Holding Choice Scarf: (Insert stat) to (Insert stat). It'd be nice if we could see that information rather than trying to figure it out in our heads. (I'm bad at math.)