馃槺 I love surprises, specially is they bring market intervention tools with them. It's fortunate you are based in Germany, so nobody will "blame" you of being a communist / leftist or whatever label they use nowadays. Besides, you are just including the tools, the player basis will be the ones using them (or not) 馃槇.
I started a new game in Campara size. I've being building like crazy so occupancy remains <80% and raised property taxes to 40% right away (I guess it's the only way to tax the rich at the moment, since no tax progression on income is possible at the moment). The prices have being going up without interruption, but not so much as in my previous city (although I haven't compared the numbers exactly). Unemployment is still an issue, because so much people is moving in and somehow jobs aren't growing in parallel (and income is dropping, probably an offer/demand issue). So it seems I kind of slowed down the landlord trap while generating enough income to keep up servicea and shelters, but again somehow people get f**ed up because salaries go down and expense still go up. Pretty much like in reality!, so the simulation is working just as it should 馃槈.
Maybe focused help programs for new companies or start ups (reduced taxes for the first x-years, subvention possibilities for specific branches, tax return on investment, etc) could help keeping up work creation with population growth?