What Pokemon would you like to get the Fairy typing? No need arguing about what's likely, and what's not likely to happen. This is just for what you'd like to see. For me, Mismagius. Because she's one of my favs.
The two I'd like to see most would be Vulpix/Ninetales and Zorua/Zoroark. I still stand by the fact that Vulpix and Ninetales should never have been Fire, or at least not pure Fire. Psychic would have made much more sense when they were made, or even Ghost arguably despite them being alive. With the advent of Fairy though, I think that might fit them even better than Psychic, and it would be just as fitting for their counterparts, Zorua and Zoroark.
Other ones I would like to see would be Misdreavus/Mismagius, Whimsicot, Lilligant, Milotic, Togekiss, Mawile, and the "Fairy" legendaries, Mew, Celebi, Jirachi, Manaphy, and Victini(Replacing Psychic for all of them except Mew and obviously Manaphy), and possibly the lake trio. Clefairy is probably a given as well.