Sona actually does fit both Pentakill and Dj sona and to explain why lemme copy you my comment in another post :
"i get the idea behind the skins , i just dont agree to all of them thats all. i mean i love the characters in the ways they are known to me i cant imagine them in different themes with different personalities that are WAAAAY far off from their original characteristics they wouldn't be the same for me at least not in all different themes.
for example sona fit as a gothic themed metal keyboardist to me because she is still mute she is still playing music and she still has that feminine lady like look to her.
but however i look at it i cant fit the dark personality badass pirate queen into a cutesy magical flying colorful girl."
as you might see here, this is mostly a personal opinion some people like that idea some dont.some see it as fit and some wont. there is no point calling it a rubbish argument just because its something you dont mind.
im not saying these skins shouldnt exist, they should just pointing out that not everyone is going to like them so we are going to see negative responses like that. i dont like soraka program skin so didnt buy it simple as that.
my point is , community voicing out their negative feedback isnt a nuisance.its just a ways for developers to learn what their players like AND dislike.how they decide to approach that is up to them.
and sadly in this case riot decided to keep silent about it if they make one post and explain why they want skins that are appealing to everyone and why they picked the champions they did.it put a lot of players at ease and gives everyone a good idea for future expectations.
sorry for wall of text but this is a good discussion :D