It would ruin people's headcanon personalities as well as if the Kagamines are twins/lovers/mirror images. It would ruin the fandom in my opinion. uou Vocaloids have different personalities in each of their songs, and choosing one fan's headcanon personality would end up upsetting another. It just wouldn't work. The closest to an """official personality""" we have is the fact that Mayu is a yandere.
Anyways, it would just ruin the creative aspect. For sure, no.

I made an article on why it shouldn't. o3o

I feel like it would cause a lot of arguments and stuff. Especially the voices may sound kinda weird and stuff.
Being that Miku is a spoiled "princess" in World Is Mine, I feel like people would not enjoy vocaloid being that a lot don't like Miku's personality.

I have mixed feelings about this. Okay, maybe the people who said no are right. Plus, on YouTube theres MMDs of them and I feel like that's better than if it was an anime series. But then again I think yes, because I really love seeing them and an anime series would be fun!