Oh god. The only reason I'd not want them playable or to go Alliance is because even casually browsing the forums here and there I've had way too much Alliance salt over Nightborn and the constant cries of "Horde Favoritism". Though I'm fairly sure at this point Alliance could get Vulpera and the Horde got an ice cream vendor there would be anger at the official forums over how unfair it is that Horde got ice cream.
But on the up side, they're cute and the idea of them being tiny fox paladins is entertaining.
There's also a whole creepy freaky fetish culture in/around them that grosses people out when they find out about it. Not sure it's that much worse than any other dress up fetish, but YMMV.