Having used a ScarfDit on Gen5 Pokemon Online I can safely say that he... is...AWESOME!!
ScarfDit is not only a great revenge killer, but a great counter to all these new Mischievous Heart leads, and Zoroark. Send in Ditto as your lead and you will be able to taunt them before they can hit you with a taunt. If they are using Zoroark, you become a Zoroark and ruin their little trick. After you taunt their taunter, ScarfDit should switch out; having them know you have a Scarfdit will cause them to forgo any sort of set up because they know you will revenge-kill them as soon as you get that first KO and turn your potential sweep against you.
ScarfDit is not a joke pokemon, it is also not a one trick pony. ScarfDit is a very useful pokemon, if not one of the most useful. I foresee ScarfDit becoming one of the key players in todays OverUsed Meta-game. I also foresee people will stop running Outrage on Dragonite and Axeface because ScarfDit will 1shot them if they ave used a statboost.
ScarfDit isn't any ordinary pink blob of goo, its a game changer, and I love it.