Make mining actually relevant again.

[Superlagg]

I'd also recommend having a sort of "ore bank" that persists between rounds, where miners put mats in and most of it'll be available next shift. That way, people can enjoy all the fun stuff miners dig up for more than the couple of minutes remaining in the round when they finally get it. And also so that the massive pile of guff the miners dig up wont necessarily go to waste, since there's only so many minutes in a round.

And it wouldnt be so much of an infinite source of high-end materials available at round-start, cus that fancy stuff would run out, and, maybe something like a cap to how much of each material it can hold?