It would be cool if pink cloud persisted longer, also proper pink cloud blocks similar to the chlorine and radon gas blocks, as well as something that can spawn those pink cloud blocks. It would also be really nice if Pink Cloud could mutate blocks it comes into contact with, turning dirt into some kind of pink-cloud-saturated dirt that applies the tainted effect similar to contaminated dirt applying the contaminated effect, the cloud should also be able to break or corrupt machinery similar to how it turns radios into broadcasters. Also, the pink cloud warhead for the custom missiles should have a much, much larger "blast radius", since it doesn't feel worth the cost... Pink cloud as a whole feels very underwhelming currently.