This is not COIN, but domestic policy.

City development planning sucked in some cities and some PC holy cows protected the topic against being addressed by policy.
It's a very German problem and not dramatic.


The Merkel government isn't going to do more than create noise and symbolic policy on this issue simply because that's all that they can do in general. The CDU hasn't been governing for two decades, but at most administrating when in charge of the government.*

The really relevant question is therefore not what the chancellor says, but what Gabriel (social democrat) and the greens do. The conservatives were never really multiculture-interested, but at most disinterested.
The greens are the epicentre of multiculture ideology in Germany, and the SPD is their only realistic coalition partner. The SPD seems to move on the topic of how to address the past failures on immigrant integration and it's decisive whether they can exert enough influence on the greens or not.

So far the greens didn't push themselves into the focus of attention in this topic because they enjoy the extremely good poll results which are based on the Stuttgart 21 conflict (a kinda multi-billion bridge to nowhere project that sparked a huge local civil resistance movement).



*:
There's only one "but". Erdogan, the Turkish prime minister, has embarrassed German politicians a while ago by visiting Germany and a huge Turkish event in Germany and agitating there against integration, promoting Turkish nationalism. He did recently a U-turn and this might be a result of German foreign policy efforts. Maybe we'll learn about this strange episode in a few years.