They seem expensive in my opinion. 2 to 3k+ for a tiny figure is a lot. Not exactly gashapons now are they?
Obviously really high quality and larger etc but they don't seem to be as 'catch them all' as people make them out to be. I'm only getting that Ryuko Nendoroid because Kill la Kill. Don't need any other reason. It doesn't even look that good and in general never seem to grasp the essence of the characters. The Mako one doesn't even really look like her at all. That's not the Mako I know.
Doing anything just because of Kill la Kill is always a bad idea. What a meandering, disappointing, thing that turned out to be.
And it's obviously a stylistic thing with how they look, but I really do thing they evoke/resemble their source material. I wouldn't like them if they didn't!