Board Thread:Off-Topic Discussion/@comment-6433273-20151126190829/@comment-25618373-20151213115633

Dizzyzebra wrote: Basically: we know that Avanna was changed to look more anime, but we don't know if Yamaha is still requesting that, or if they requested it for everyone.

Aki speculates on why:

'(It is in my personal opinion that Yamaha made this quest due to the shocking response from the fandom with Voctro Lab’s Clara and Bruno original artwork. [...] This is, of course, just a personal opinion.)'

(She says it is just her personal theory) well it's pretty likely.