first of all i am not sure if this is going to be in 43 but maybe when metal and breakable metal are exposed to water saltwater or distilled water that it rusts and starts to turn in to broken metal. This would add slight realism ( not out of question though) and many other fun creations would be possible. I know Antb added this in his mod but i am not sure if the official powder toy would have this. And maybe we could also add zinc [ZINC] a breakable construction materail with a twist. when melted and mixed lavva from metal it becomes a non rustable metal. this would create [GSTL] galvanized steel and unbreakable meltable conductive material. this would conduct to any electric component. and would be meltable. 2000C. adding these materials would open up better electrical circuits and open up making metal working factories ETC.
It'd be ok, I guess. A Stickman obstacle course with a timed spark...I could see it. Rust the metal and it falls then a timed spark runs through it and bam, it's hard!
Particles have 2 type assigned, the type and the ctype. By creating a check for lava type, then another check for METL/BRML/BMTL ctype and a zinc ctype, set the ctype to GSTL