That's not perfect, but pretty good already. I'm also interested on 3DS emulation, since playing on the actual 3DS is a drag. I love emulators because they are a way to preserve those games for the future generations, and it's cool that emulators of older systems, like SNES and Genesis, are getting more and more accurate. One day, not a single SNES console will work anymore and Nintendo will be long dead, but Super Mario World will still be played thanks to emulators.