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[Suicide Junkie]

All of the AIs should be purchasing the Normal Trait.

You do have to set the game up for at least 2000 points, though, or the AIs don't have a chance to choose traits.

If you have added new races, such as TDM, you will also need to use the AI Patcher.

P&N is designed to be playable with the human as a Normal race. It will be a bit easier than standard SE4 or TDM, though.
The Pirate and Nomad traits are there for a much harder and very different type of game.