This is excellent, I love it. Just something weird, the eye white from the preview and the one from in-game isn't the same. The one from the preview is much better.
You should include SSB4 and 3DS stage on your Classic Exp. Pack. That would be nice. There actually a lot of SSB4 stages. I know it's "Classic" Expansion Pack but many people would love it.
And others I can't find like Prism Tower stage, but those one are just some example and I'm not asking to include all of them. Just the famous one. Like 2 or 3 from them.