Not to be rude but she would make them all look unreasonably fat by comparison.
Not to be mean, but there's no way any of those women would want to ever be seen near Mikeneko in the flesh, being that they all have least 2x as much body fat despite most of them being shorter. Not that there's anything wrong with a more comfortable life style for these other Vhoejos, other then Nazuna that is: But it would confuse the fans. They would be completely discombobulated thinking "I can see why these other almost average looking women would want to use Vtuber avatars, by why is this whispy fey like creature here?"
Did I call someone's Oshi Fat? I want you to know I made like 12 typos but I nailed discombobulated in 1 shot.