Originally Posted by BWISkyGuy

I've had a couple of agents mention that the mobile check-in (taking into account the boarding pass) is being redeveloped, but I have no way to validate that or know where it is on the heap of priorities within AA's app needs.

I used it 100% of the time at stations where it was available, and even then it's still not my most pressing wish for the app. Just scanning the mobile boarding pass is almost as fast, especially since I hardly felt comfortable jumping the line (as instructed) with the mobile entry since the line is most often short or moving very quickly when I enter.