As for now IC2 adds a bunch of cool elements like lithium, Uranium and Iridium as well as many other cool elements. The point I want to make is that there should be more cool and funny uses for these elemnts. For example:
If you drop alkalimetals such as Lithium in water it burns and explodes.
In the Endgame there should be a possibility to transfer elements to other elemts via nuclear enrichment(adding protrons and neutrons to the nuclear core)
you can't through iridium out of inventory.
You are able to seperate everything in elements as well as assembling elements together to get a new material
Most of these proposals are suggestions for the endgame. In other words expensive, and power expense.