To everyone who is reading the original post:
The game has changed and updated many times. EVERY bit of information here is outdated and no longer true. IF you're going to build myth nukes, they need to be on islands that yield the best resources for them (For example: +wood -rock island creates Manticore, harpy, and hyrda nukes).
Players who build the way as stated in the O.P. today, are usually rimmed or their cities taken quite easily.