for a genre i'd love to hear more of- cabaret style music, and more specific to artists i like- dark cabaret (thinking bands like the dresden dolls for example- cabaret that leans on darker tones). i see some artists that maybe have a little cabaret influence, but its often mixed electronic music so much, its more to electro than cabaret.... but cabaret is often done with big bands and instruments that dont always sound great unless directly recorded/sampled... so its understandable that many producers wouldnt aim for it, or that it may be hard to recreate! (i have heard some pretty good 'big band' vocaloid stuff before, but there isnt much!). i guess also in line with cabaret vibes and big bands, it would be interesting to hear some dixieland style music with vocaloid too!
all in all i listen to all kinds of genres- i care a lot about lyrics and i dont tend to like 'repeitive' songs (ones where a chorus is the main focus and repeats, for example). but genre wise i will kind of take whatever. i dont dislike the more electronic stuff but i analyze what i listen to greatly, so some of it i find more interest in that others, and thats more artist specific in the end.