Is it better to try to make all of a product off your main city, or just the stuff you need. For an example, tycoons need burgers and you usually don't have the veggie soil for flavors. So, is it better to make only the flavors off the main island, and then have the meat and final production done at the city that will use it? OR is it better to make everything off the main island and then simply ship the burgers back to your main city?
Least cost/trade routes/ships needed at the beginning is good. Start your stuff on your main island, then when you progress further, ship everything to a production island, and then to your main from there.
GT: Ranqer ::Currently playing:: Whatever my procrastination allows me to. Unfinished RPG, I'll get to it... in 3 weeks.
it depends on how big you want your city to be, because at some point you are forced to transfer production to another island if you want to grow, so imo it is better to separate cities and production as soon as possible.