The lack of communication from niantic, server issues for weeks and way too shallow "content" is already killing the game. People came for the IP of pokemon on mobile, had fun catching a few of them, realized that the "combat" is a joke, and besides catching the same stuff over and over there is nothing you can do in the game really. Except the usual die-hard fans, user retention rates are going to the ground fast now.
Basically, the whole topic will be dead in a few weeks if niantic continues this path. A great example for a missed opportunity.