I wonder if they can bounce him around the auditorium like Q from Star Trek NG. One minute on stage, then sitting with the Maine delegation, then up on Wolf Blitzer's shoulders. Could be interesting.
I'm already picturing a Saturday Night Live sketch where Mitt is the caretaker at the Overlook Inn and Hologram Reagan is the bartender in the "I'd sell my soul for a drink" scene.
EDIT: sorry, that's from The Shining for those that haven't seen it.
EDIT2: Leno: "With popular clamor for transparent government, today the RNC made a step towards that by introducing translucent government."
EDIT3: Political cartoon of giant R2-D2 projecting Hologram Reagan on to stage at convention.
EDIT4: Leno: "The RNC experimented with having a hologram speaker at the national convention this year. With recent rule changes, they hope to have hologram delegates by 2016"