It’s easy to start building a model with a vague idea of what you want, and then sharpen your focus as you proceed. It’s impossible to complete an adequate model unless you have developed a precise idea of what you want it to do.
I ran Simulations Publications, Inc (SPI), a company that published over 400 of these games while I was there (1969-80). Most of these were wargames. Peace games don’t sell as well, which says something about us all. We’d rather fight. Kill for peace and all that.