Mortychichi, I think part of it is the customizers -- candy pets are tricky to work with. Better than the colors who can't wear standard clothing, but the subtle shading offers an odd contrast when paired with starker items.
"I don't get the hate for sparkly sour candy Candy pets,"
I think it's whether you voted for Candy because of the striping in the Candy Elephante, if you really like the candy stripes/swirls than the gummy Candy pets are a disappointment. On the other hand if you don't like the striping the gummy version is preferable.
Not enamored of the new colour (and only one, which is sad), but it does look tasty. Good news is no need to repaint right now!
Glad someone pointed out the hat / wig bit, I was a bit disappointed until I read they can overlay, thats neato!
Basically finished my Ixi gallery today too coincidentally, woohoo(ish). Unless some r110 TCGs magically appear, or a Love Ixi Lunchbox or Gummy Striped Ixi accidentally fall out of someones gallery, I don't see adding much else...