Dead or Alive 5 Plus for Vita includes a new first-person mode, in which you hold the Vita vertically and use the motion sensor for a "first-person, full-screen view of your opponent."
The port also has new touch controls, which go beyond the expected touchscreen macros – "Simple taps, swipes, and pinches on your opponent trigger a variety of devastating moves," Tecmo says. In addition, DOA5+ offers detailed frame data for serious study. Uh, for tournament play.