It's alright. I don't particularly like it, but I consider it a necessary evil. I wish they'd added two types, the cute fairy retcon, and a different (read: more thematically serious) one to nerf the dragons. Some of the type changes seem bizarre as well, why did some of the pure normals get a hard change to pure fairy, yet others became dual fairy? If they were going to retcon a shitload of normals then they should have added more new pure normal lines in XY to fill the pool rather than half-heartedly dualing out.
Also none of the legends/myths typically considered "fairies" got a change, like Mew and Celebi etc. They're commonly Psychic so some of them could have got that retconned to fairy or added as duality. But I guess because they're so uncommon in normal play they didn't bother.
My favourites are the Togepi and Ralts lines, don't really have a least favourite.
>>27212283I would have liked it if they went for the mischievous/deceptive imp style as well. Chatot, Girafarig and Wobbuffet might have fit in with the Mimes and Mawile.