Hi, some time ago I did a research looking for how much residence plots (non qualified, qualified, executives and elites) were needed for every working place plot (food industry, heavy industry, manufacture, technology, offices and shops) to avoid workplace need or unemployement, and to make everything more symmetrical and well organized and also to prevent traffic issues. I also did the same with the different townhall upgrades (basic one included). For example: For 1 T1 HI (Heavy Industry) it's needed 2 T1 NQ (Non qualified residence plots) or 1 T2 NQ. So, I was wondering if you want me to publish that as a usefull information, because it really is for me. Waiting your answers and opinions. PD: I haven't tested it, but think it's the same for every Cities XL (2009, 2011, 2012, Platinum and XXL). I did this test at the XXL one.