This makes Factorio more fun by turning pollution and combat into an interconnected system you actively engage with, instead of just tossing down laser turrets and forgetting about both. This minimalist mod stays close to the vanilla experience, adding only what's necessary to accomplish these goals.
I installed Rampant, turned on the new enemy types, and killed some of them. They dropped loot. Could you describe the circumstances where you didn't see loot, or provide a savefile?