User blog comment:DisaPP/What do you expect of future voicebanks the VOCALOID program?/@comment-32500188-20140303161118

I'd like the editor to handle more VST effects per channel, as well as allow for input from a MIDI controller and real time recording to cut out the need for sequencing the vocal parts in an outside MIDI program. I'd also like it if the parameters had a more clearly defined grid system other than just depending on the number values. And after looking at the demonstrations of it, I do hope the next interface has some similarities to VocaListener's for the sake of visually editing the pitch bends, attacks, and nuances better than just drawing them out and getting potentially ragged results for those of us without tablets and all...

As for voicebank capabilities: the main big thing I can thing of that's already been said and I agree on is "universal phonemes." That's mainly for the sake of making it easier to mimic different dialects of a language instead of trying to trick out existing ones and ending up with awkward results... as well as increase voice type variety for any given language. (Of course, no matter what you do, accents are going to exist with this, but that's what makes each Vocaloid unique in their own right.)