1.) I saw a post earlier that showed Jirachi's type being changed to Psychic/Fairy... If they did that, it would make no sense, you would would replace the Psychic type with fairy making it Steel/Fairy, it makes just so much more sense.
2.) To those out there saying that a dragon immunity is a bad idea, dragons can 2HKO Pokemon that resist the hit with there STAB move... I've knocked out Scizors and some Jirachi fairly easily with Choice Band Outrage coming from Adamant, max attack Dragonite. Dragon doesn't hit many Pokemon super effectively from the start, so having one resist and one immunity is more fair and balanced. Dragon would still be a top tier type threat that would be on every team, but it wouldn't nerf it to heck like...
3.) Giving it (dragons) a rock weakness like one user suggested. Dragon/Flying is the most common dual type among dragons, do we really want them taking 4X stealth rock damage? No. The Rock Typing is strong enough as it is, with its advantage to Bug, Fire, Flying & Ice, Sandstorm benefits, and Tyranitar as a sandstorm starter. A new type with the specifications listed for "Fairy" would actually do a much better job. It would give Poison types a reason to actually exist, and give Steel a little more offensive presence. It also boosts the defensive role for Fire and Psychic types.
4.) As stated by others, plenty of Pokemon can be given the Fairy typing to ensure an even spread number of Fairy type Pokemon: Cleffa, Clefairy, Clefable, Mawile, Togepi, Togetic, Togekiss, Snubull, Granbull, Blissey (Because I think it's more fairy like than Chansey), Gardevoir, Volbeat, Illumise, Altaria, Castform, Luvdisc, Mismagius, Finneon, Lumineon, Audino, Lilligant, Cincinno, Minccino, Whimsicott, Alomomola and even some legendaries could get a retype here and there. This didn't even count the Pokemon that could come out in the 100+ new Pokemon.
5.) Fairies can be more than tiny, feminine, pink things. In fact there are animal faries as well, such as Cu-Sith.
Cù Sìth
From Wikipedia, the free encyclopedia
The Cù-Sìth (Scottish Gaelic pronunciation: [kuː ʃiː]), plural Coin-Sìth (Scottish Gaelic pronunciation: [kɔːn ʃiː]) is a mythological hound found in Scotland and the Hebrides. A similar creature exists in Irish folklore (spelled Cú Sídhe), and it also bears some resemblance to the Welsh Cŵn Annwn.
Appearance
According to Scottish folklore, the Cù-Sìth is said to be the size of a young bull. Its fur is shaggy, and usually cited as being dark green though sometimes white. Its tail is described as being long and either coiled up or plaited (braided). Its paws are described as being the width of a man's hand.[1]
The Cù-Sìth is thought to make its home in the clefts of rocks in the Highlands,[2] and also to roam the moors and highlands.
Activity
The Cù-Sìth was feared as a harbinger of death and would appear to bear away the soul of a person to the afterlife, similar to the manner of the Grim Reaper. In this role the Cù-Sìth holds in Scottish folklore a function similar to that of the Bean Sidhe, or banshee, in Irish folklore.
According to legend, the creature was capable of hunting silently, but would occasionally let out three terrifying bays, and only three, that could be heard for miles by those listening for it, even far out at sea. Those who hear the baying of the Cù-Sìth must reach safety by the third bark or be overcome with terror to the point of death.[2]
It was also said the baying was a warning to lock up nursing women lest the beast abduct them and take them to a fairy mound (Scottish Gaelic: sìthean, pl. sìtheanan) to supply milk for the children of the fae (daoine sìth).
Etymology
Cù-Sìth is a Scottish Gaelic compound word composed of the words cù (Scottish Gaelic pronunciation: [kuː]), meaning 'dog', and sìth (Scottish Gaelic pronunciation: [ʃiː]), meaning 'fairy'. Therefore, cù-sìth literally means "fairy dog".
Often, Cù-Sìth is said to mean "barrow hound". The error in translation is due to the incorrect assumption that sìthean, meaning fairy mound, has a root (sìth) which means barrow. However, that root means fairy and has nothing to do with barrows, mounds, or other earthen structures.
I dunno, but I think this would be the coolest Dark/Fairy type to exist if they took some idea from Cu-Sith.
6.) This hasn't even been confirmed, Sylveon could still be a Flying type for all we know... GameFreak very well could be pulling our legs. This wouldn't be the first time they did so... *looks at Reshiram*