At least ollie's gonna get an update/some nice redesigned outfits for maghni ai, would love a maika update but i don't think voctro cares about the vocaloids anymore lol

Maika chika lily and avanna

Rana for sure. I get she's harder to obtain then some others but she's really worth it! I also think Zunko deserves more love, at least in the Western fandom.

Zunko is hated in the Western fandom because her company does NFT stuff + sells questionable or borderline-NSFW items of her & her younger sister Kiritan (remind you both are under the age of 18) on their official BOOTH shop.

They deleted everything off their BOOTH a while ago, which is sad, I was thinking of purchasing the Kiritan manga. (Not trying to start an argument, I wasn't aware)

I checked the shop again, & I see they removed the dakimakura & other questionable stuff, possibly because of Pixiv’s changes in their policy on what can be monetized & what cannot. (I was not aware of any manga being sold there.) Now it seems they’re only using BOOTH to sell extra voice samples (similar to VOCALOMAKETS’ exVoice & AHS’ pitagoe releases) as well as avatars & models for VRChat, FaceRig, VTubeStudio, etc. & some so-called Manga Kit stuff for PowerPoint.

The clear answer is ruby.

Meika Hime and Mikoto (sort of)

Arsloid

If we are counting utaus matsudappoiyo and not sure about this one but haruka nana

Xingchen (outside of the Chinese fandom. I can't find anything that uses her outside of bilibili except for a few covers and the songs on the Xingchen channel). And agree with what you said about Gachapoid, I hate Gachapoid.