I for one welcome...
"Hello everyone, this is my giant disembodied eye project," says Nirav Patel, a software development engineer at Apple, who thinks up interesting stuff in his spare time. With Evil Eye, Nirav takes a webcam, a Microvision Showwx laser pico projector and a frosted glass dome light shade to build a face tracking eyeball that " …
As opposed to when he's working at Apple.
I expect it would be a lot easier/cheaper to paint the eyeball on the globe, put a light inside it and move the whole globe around rather than back project it.
It would also allow a much greater freedom of movement.
(Or if you want to project different eyes, shorten the focus on the projector and fit it completely inside the globe)
Vastly over-engineered and lacking in features/functionality that would be available with a lot less engineering.
I'm sure they'll sell millions to government contracts and fanbois.