I think some people are missing the point
if you can fit a projector in a phone, people will buy it, just because it has a projector, just so long as it doesn't compromise the size of the phone...
I dont think it will be looking at projecting a massive screen... ideal, probably no more than a 30cm x 20cm, just big enough to project a video for personal viewing on some sort of mini foldaway projection screen.. (its my idea, I thought of it first) so while you have time to kill, you can watch the same movie you were going to watch on your phones tiny screen on a less tiny screen.
the salesmen will go mad over them, just so they can show off to the other salesmen at the motorway services, "look how good a salesman I am that I can afford this silly priced phone"
my spare battery is in here somewhere !!