Question Can I control my lead vocal pitch directly via MIDI

Yes, in one of two ways!
  1. Using the pitch correction feature you can send MIDI CCs in realtime to set a scale to correct to. Setting your window and attack times will allow you to set this for the most natural sound.
  2. Using a single voice of harmony in Notes mode with the lead voice level set to zero, you can can use MIDI notes to 'play' your lead vocal to whatever pitch you want. The humanizing controls (including smoothing, portamento, timing etc.) are all available to let you create the kind of sound you want. Also, remember that you can also use pitchbend for pitch control either together with MIDI notes or just by itself.