Being a big fan of hockey, and watching the NHL a lot, I have grown to hate the video reveiew in that sport. It's a pretty recent addition, and even though the theory of it is great, it's a pain in the arse, cos it takes so damn long, and they allow reviews of far too many things - so it becomes a farce. So I'd have to see what exactly they would be reviwing before deciding if I like the idea!
Sin bins can indeed do one.
Are they taking retrospective action on diving yet? I can't remember if that's a thing, maybe it's wishful thinking. Cos that's something I'd love to see, retrospective bans for players who dive.