[Suggestion] Lithium in water (alkali metal on Icarus)
I know from the patchnotes over time Lithum and Uranium will be in the new map and T5 research. From there, I remembered alkali metals (the elements on the Periodic Table in the first column not including Helium) tend to explode in water for some reason. I think the Mythbusters when over it.
While raw Lithium probably doesnt do much in practice, this is Icarus, so add a mechanic where dropping raw Lithium in water may produce quite the reaction.