That is true but it would be cool to not be just bound to existing items. As I undersand it you should be able to research ways to envolve and change parts in your machine. To not only build contraptions but also modify them to achive something new.
to stay with immibis cable example:
you have the fairly effective low current transfer. You have the possibility to transfer ultra high currents as well for a lot of loss. so why not combining both to have a better result.
(that might be a bad example though because i know that the reason for that is the physics of electrical current and not the material.)
btw is is kinda funny how you are going in disscusions that have nothing to do with the topic