Most of the support modules currently require them. You just need to go far enough down the tech tree to find them. And supposively more uses later on as well.

criticism is fine... we are pointing the bugs and other things in game that should be fixed and changed
that's feedback

I really wish they would add more ressources and maybe an augment function to your tecs. a basic example would be: missile launcher (augment durantium -> a little bit more damage or something like that). of course, more creative effects would be better, this was just a basic example. but it would really increase the use (and need to mine) of the ressources. oh, and of course more powerful augments should need more ressources than the basic ones, maybe even more than one type. additionally, to get these augments, a bunch of new tecs could be added, eg. a duranium augments tree etc, and the augments that need more than one ressource would of course need both trees to that point. just an idea.