How impossible is a merger of coal town, iron town, and tourist seaside town? I haven't yet gotten a sense of just how overbearing the pollution will be.
One thing that I'm worried about is most of the developer videos, beta 3 videos, and lets all be mayor videos show its way too easy to remain profitable. With a thousand stupid decisions in the Lets All Be Mayor series, the cities operated most of the time in the black without any problem. I've heard that the difficulty mostly kicks in once a resource-rich town runs out of resources, but with the money coming in so easily in these videos budget-balancing seems so unimportant.
The lets be mayor videos were done in sandbox mode, where it's much easier/faster to remain profitable