I could be on board with this, if implemented properly. ALL mooselimbs in Germany must live in this city - no exceptions. The city must be walled, mine field beyond the wall and heavily guarded. No one is allowed in or out - no exceptions. Anyone caught leaving the city is shot on sight - no exceptions. If they do this, then I’m fully on board with them having a city.
The working German taxpayers will still have to foot the bill.