"What the **** is an L button?"
Yeah, that looks terrible. Terrible for Smash, and terrible for a handheld. So it's doubly terrible for a handheld Smash.
This control stick apparently uses the Control Pad (D-Pad). Smash 4 uses the Control Pad to let the player make a taunt.
If the game lets the player use the Control Pad as a way to move (which I doubt), then this will be fine.
If that's the case, then this is completely idiotic.
Even if the game
does let you use the d-pad, the analog stick is an extremely important feature to the Smash series, and any freaking specialized controller should make use of it. I don't know why the article is calling it "perfect" for Smash.
It really looks like the company that made this didn't do their homework at all if they're planning on targeting Smash Bros fans.