Has anyone heard of this technique called the A-Landing? I accidentally found it while playing yesterday, and I posted about it on the smash subreddit, and someone had informed that it had, in fact, been found, and has been called an "A-Landing" (I personally called it a Tech Dash). I can't explain it very well, but basically you use an aerial move that has little lag when you get close to the stage after a jump/fall. If done correctly, the character shouldn't perform much, or any, of their aerial, and then dash to the side they were facing. also, if you're using a N3DS, if you use the c-stick, and continue holding up while using this, you will automatically jump. There's not much advantage to it, but still pretty cool.
Here's a video for it: https://www.youtube.com/watch?v=FOMfbBxVgDY&feature=youtu.be