Kyoko Date Vocaloid x Jem-loid
More seriously, I'd like an English bank for Ruko (regardless if it's female, male, or even both for more logical reasons)
Same for Rook
Momo French (don't ASK me WHY)
Come back of Kei Mochiduki / Mochizuki with brand new voicebanks (oeven set of the old ones + new ones in a package)
Come back of Windows 100% UTAUs and why not more of them by other utaites (and this time with the magazin being esier to get for Westerners //shot)
After some may come up to me later but yeah, those are the first ones I've been thinking about, but hey, one can still hope !