Yes, this is what I'm getting at. Thus far the fairies that aren't tied back to older generations (This includes Sylveon, since it's obviously going to be Eevee-like) seem to have a sphere at their base and then minor details drawn around it. Flabebe has a tiny body and little arms to attach to its flower, Spritzee is a vaguely avian fluff bird with Kirby feet, and Swirlix is a literal puffball. Take Fire for example. Even in Gen I you had its representatives primarily from various mammals, Charizard actually being the notable exception. Another group with low representation was Electric, which had high variations - Magnemite actually departed from being vaguely spherical when it evolved. Ghost and Dragon didn't really get a fair range of diversity until Gen III, but even in those gens the pokemon that made up the group were fairly diverse. Most of the Gen V Fairy Pokemon look like they'd start a "How to Draw" with "First, Draw a Big Circle..." That's really what I'm getting at.