This is a really nice review - great, thorough pictures and descriptions, and you gave Vader a lollipop - and that's truly awesome. I have to confess...I have a thing for Hello Kitty. Full disclosure: my first job was being Hello Kitty, so I'm allowed! Once you've worn the costume, really, are there any boundaries left?
Anyway, I have one of these (the picnic version) so if I can just mention a couple of things I've found that might be unique to my purposes only! One is that it drives me crazy that the head won't come off. I had some designs on making "me" in costume as a custom by adding it to a minifig. She also lost some of the humor value I wanted due to an insurmountable problem. Because the head is so wide, a lot of accessories can't be held up - only down at the side. I'm not talking about the Mega Bloks accessories that came with her, but rather some other things I wanted to do. So if you've got a great idea for having her hold something fun, that's another limitation. Her sword-wielding just isn't as menacing as I'd like, and dual swords are out of the question ;) BUT you can get a little of the effect by turning her head. Still, far from ideal.
That being said, she's still a good Hello Kitty with a workable grip, and I've found some fun ways to bring her into my minifig world.
Now the Oxford set crossmr posted looks much more like what I wanted.
/sigh
/gets out credit card
