It's not original, it was first done about 60 years ago and against Iceland no less. The reason it isn't done much is because you're setting yourself up for a worse chance unless everything goes perfectly. Like I said, he was a tiny bit closer but had to take a shot from a tighter angle.
Suarez entered the box before Messi took the penalty and so the penalty was illegal. What you do in that case is award the defending team an indirect free kick from the penalty spot. There's a reason why the ball has to move forward, why the kicker can't stop in his run-up and why he can't fake taking the penalty.
I'm not saying it's illegal and I'm not advocating that it should be. I just think given what rules are in place and how referee's can enforce them it wouldn't surprise me to see a ref make an unsporting behavior call on this kind of penalty. As a manager I'd probably be annoyed with this kind of penalty.
Suarez getting a hat trick, that's not something to love.