Personally i believe there's a major change in Rosalina's character , and it's all a mix of being in different games , different situations and of course , different voices.
We don't see that problem with Any other character , even if they behave drastically different in some games (compare Mario Kart to Mario Strikers) because they have a trademark sound that remind us the base of the character , what they represent initially and what they truly are.
Sure , most characters in Mario are very ... bland(?) in the sense that they are just happy characters that have a good time according to the situation.
In the case of Rosalina we can appreacite this even more since she doesn't sound like 1 person consistently ; You would be feeling awkward if every once in a while you talk to a friend and she sounds like 3 different people.
Weird right? the comparison fits since Rosalina appears more and more often in games as a newcomer.
We can see Rosalina was presented as a very mature character above all , and that trait carried over to Mario Kart Wii , and it didn't matter that she was racing against others in that game , she still was the same as before , but now behaving according to the game.
the transition to MK7 feels like a bridge , considering that what changed was that Rosalina sounded even more upbeat , but not over the top so it was ''all right''. It also helped that Kane's voice , while not identical to Rose's , was very alike in many other aspects other than just being ''identical'' or trying to be an imitation.
And now the current transition to Rosalina , in current games , she sounds nothing like before , alright , but i'm not feeling anything from Rosalina's former character in present games , compared to MKWii and MK7 , Rosalina in MK8 feels like a brand new character in all senses , i just don't feel it is herself anymore.
It looks like her , doesn't sound like her.
Was Rosalina suppoused to be excited in sitiations that demanded it? Sure , like in MKWii ; But was she really suppoused to be another Daisy when she screams ''WEEEEEE'' and sounding overall like Peach??? i don't think so.
For the record , when it ''sounds like Peach'' it doesn't mean it's identical , it means it has the same sweet and girly vibe that Peach portrays in her voice. It doesn't help at all when Rosalina is femenine too , so she ends up feeling like she is Blue Peach.
I want to fully accept the change , but i simply can't considering that the trasition isn't as smooth as it was from Rose to Kane.
And then on the other side , we have Rosalina smiling a lot like in the 3DWorld render which i think its off character .
