For the last 3 lines those things I intended to introduce step by step, depending on what happens. In your example it could be:
There is a flood and all food in the river regions has rotten.
Everyone living there has to get food - which way ever.
How will the people react? Will there be theft (or at least the attempt of), will others help? If yes how? Everyone single? Or via a committee? Via "taxes"?
What if the "tax is theft" people do not pay their share of the tax? Will they get murdered in their beds by "commies"?

Everything is open to imagination.

So will your proposal in this first turn be:
We need land distribution rules. The rule is: I grab G6?

Oh, I forgot: If you look at the AP rules you see you can grow more food, since food is also production ;)