While messing around with G&W's side b I discovered that if you use it while dashing off a platform then quickly turn the control stick the opposite direction, G&W will glide through the air below that platform. This hits both below the platform and above it, and works regardless which side of the platform you run off. This technique also works with his neutral b, but is a bit harder to pull off.
Could this possibly improve G&W's metagame at all?
I don't know if someone has already posted about this, but I thought I 'd still share it.