I agree with it being a distraction. My car has a system that when I put on the turn signal on a highway, if a car is approaching from the rear or sitting in my blind spot, I get an audible warning, making me do a proper shoulder check to see what it is. I rarely need it because I regularly check my mirrors and know what is around me almost all the time.
I like it, it works 100% of the time and it isn't a distraction.
As for the 'follow me' NAV, I would hate it. I've never been interested in anything that projects on my windshield. I enjoy driving, and I'm a very observant driver, and I can't even take it when my wipers or defrost don't make my windshield perfectly clean. The last thing I want is some animation projected in the way of being able to see down the road.