Papafox,
For me, Autosteering has been fun... I usually drive in the far right lane, and AutoSteer, for the most part tracks, I think its catching the solid line on the right, but when the lines disappears or becomes faint it might disconnect, if following a car, it will track the car in front, but, it sometimes changes lane if the car in front changes lanes. as far as your question of will it change lane with blinkers, yes, but most of the time, it will disconnect soon after lane change as it can't find the lines, but of course if there is a car in that lane that you switched into, it will track the car and remain engaged. (but, driving down Kalanianaole Hwy, even if following a car in the lane, it will track into the left turn lane on a few streets...)
I hope that makes sense...