What I mean by "element creation" is using a tool/element/wall to combine the three particles to create an atom. This would make a lot of cool saves and more things to do. Another complement to the feature would be a tool/element/wall that can break down a particle into a group of Neutrons/Protons/Electrons. A later feature could use even smaller component subatomic particles and break them down further (into quarks, hadrons and the such) with another pair of tools/elements/walls.
You mean like mixing protons with electrons to make hydrogen? Or for more elements?
Or it maybe proton collision might be planned to create quarks in someone's script but it will never happen lol.