Voice Acting ... maybe in an Ocarina of Time sense where they say a word or two like "Hello!". Pokemon doesn't need full voice acting for every piece of spoken dialogue. In fact, most Nintendo IP's are pretty well off without them, save for maybe Star Fox.
I wouldn't mind if the cries got updated, but they can't be the anime "say my name" thing. That's just idiotic.
If you're a gamer, it is your responsibility to share this with everyone you know: http://youtu.be/jHmDjNCZR3k