The idea behind Kai'Sas design
So overall one of the most controversial things about the new champ seems to be the fact that Kai,sa,who is most likely Kassadins daughter doesn't look like she was corrupted by the void. Sure she has some marks on her body,but thats about it,which is really tame compared to what the void did to the rift herald or rosh,the previous tidecaller.
At first I was really confused as for why Riot would make a champ like this sexy. I mean shouldn't she be mutated?Why would there be a need for Kai'sa to look sexy if she rarely interacts with humans anyway?
However thinking more about how Kai'sa was likely developed I think I understand why they decided to make her sexy.
I mean what would you say a person needs to be in order to survive in the void?Right they need to be an extreme badass!Which is likely why she isn't malformed,it would look like she would loose to the void,which would undermine the badass-aspect that Riot wanted for her. And while it isn't required,badasses tend to be pretty good looking.
Heck at this point I am pretty sure that one of the biggest influences for her design was in fact Samus Aran from the Metroid series,who just so happens to be a female sexy badass,fighting alien monstrosities with energyshots,while wearing a protective aliensuit with big shoulder pads. https://d1nao0k9edgivc.cloudfront.net/wp-content/uploads/2012/12/John-Woo-Metroid-616x397.jpg https://static.comicvine.com/uploads/original/14/148983/3846459-2480712058-Scree.png
Riot simply never went for the theme of "person horribly corrupted by the void" in the first place,instead they went for "badass alien hunter with organic battlesuit"
So do I like her design now?Not really,I still feel like it downgrades the threat of the void a bit and feels oddly convenient for the female champ to be spared the mutations,but I can appreciate the design at least a little more,knowing what theme Riot went for.