I like to think that Luka NT is shelfed right now and Crypton is actually giving her new recordings to match her mature tone from vocaloid in her NT (preferably her v4x english)

Thinking about Kagamine NT.
My ideal Kagamine update pack would be like this:
Rin "Act3", Power, Sweet, Warm, "Dark"
Len "Act3", Power, Serious, Cold, "Light"
Rin Dark would be a serious-toned voice for Rin like Miku's Dark, with a bit of a Neru (fanloid) tone. Len Light would be a cute-toned voice like Miku Sweet that's like a boyish Lenka.
This would allow a producer to smoothly transition between the two characters in a song without too much contrast.
Just imagine, Rin Power > Rin Act 3 > Rin Sweet > Rin Warm > Rin Dark > Len Cold > Len Serious > Len Act 3 > Len Power > Len Light > Rin Power and repeat.
The Act3 voices (could just be called Native or Original+) would be their original tone from Act1 without that Power tone, but updated to the standards of Append. Yes I know Power is pretty much Act3 but aaaaaaaghhhhh.
This ideal pack makes no sense but I just really like the idea of them being a gradient to eachother, even if they kind of already are.

Had anyone beatboxed with miku? like made beat boxing in Piapro or Vocaloid in general? Or whistling?

Has any producer made an original song with any of the new V6 voicebanks? By new voicebanks I mean the new original ones that Yamaha dropped with V6.