You see, its Drill to rest the combo that is a gimmick, rest itself is not. There are many times during a match when you are touching the opponent and are able to do rest so if you practice predicting when you'll touch your opponent rest will be anything but avoidable. Yes its easier said than done but if Jigglypuff were ever to be seen as a good character her metagame would be soley based on rest just like how it is in Melee.
I can see how people would disagree with me by saying fair is her best move, but by far? You've got to be kidding me.
I don't think fair is her best anyway? Her grabs are a huge part in her metagame. Grabs are so important to rack up damage. I think we can all agree that fair belongs to her top 5 moves though with rest grabs pound and dair.