> The courts should be speedy at forcing landlords to rectify problems just as the courts should be speedy at forcing out squatters.

This raises an interesting point. In the United States, in the last 30 years, many states have introduced a voluntary "family court" system. If both sides opt-in during divorce proceedings, then the process can be much faster, cheaper, and lower friction. What if there was something similar for renters and landlords? I think it is worth a try.