Drakengard 3 and NieR were two of my favorite PS3 games, and that was without PlatinumGames doing the combat. Can't wait for this to finally get a release date, which sadly isn't looking like 2016 anymore (for the west) if there's still no date for it in Japan.
Zero from Drakengard 3 was even more vulgar than Kaine. I don't think you have anything to worry about as long as Taro Yoko is still writing and directing the series. They've still got the same lead composer too, so hopefully the music is as good as Nier's was.
Ugh, I can't think of anything that would have ruined Nier and Drakengard 3 quicker than JPN audio only. Laura Bailey and Tara Platt made those games great, and old Nier, Mikhail, the rest of the Intoners, etc. were all voiced very well too. I'll take localization-done-right over a half-assed subtitle only game (like the last two PS4 games I played, Nights of Azure and Senran Kagura) any day.