The first thing is the palette generating. The black is supposed to be treated as if it were transparency on a proper NES sprite, so seeing it change on the sprite seems off. It does that when using the Screw Attack or a Starman. On the right is how it looks in SMBC and on the left is how it's meant to look. Second, the "source game" text claims he's from Kid Icarus, when it would more accurately be Kid Icarus: Uprising. Since Dark Samus specifically states Metroid Prime 3, it seems more sensical. And third, while I know this wasn't necessarily expected, I was kind of anticipating the addition of the FDS versions of the tracks when it came to the addition of Dark Pit. That's pretty much it though. Otherwise I'm glad to see it in.