The Resistance (including me) and Enlightened in my area have really scaled back lately; even Hangouts/Slack chat is getting quiet. I don't know if that's a sign of things worldwide (it seems Japan is hot and heavy in the game right now according to one of our agents who just got back from there) but it appears a lot of the long-time players are stepping out of the game. We also see a ton of newbies come and quickly go, often never reaching past level 3 or so. I think that is partly due to the group mods no longer actively recruiting them into the group and helping with training.
I realize churn is a common occurrence with any MMO, but Ingress always seemed like more than a game; our group socializes outside of the game and I wouldn't be surprised if we all remained in contact long after Niantic shuts it down.
I am playing in Europe for about 12 months, and while the game is still going on, the number of players doesn't increase...some are joining, and about the equal amount leaves. So I wonder if the game had its peak already. After a few months it becomes kind of repetitive... but anyway, it's a good game, I enjoy playing it, especially if I come to some new city.
I realize churn is a common occurrence with any MMO, but Ingress always seemed like more than a game; our group socializes outside of the game and I wouldn't be surprised if we all remained in contact long after Niantic shuts it down.