They should add a feature (could be similar to the block track orb) that allows you to see how much mana you've gained from mining with a pickaxe. I think they should also do a money counter, but I'm not exactly sure how that one would work since you may or may not sell every block you mine.
So is hades magma only meant to drop broodmother eggs this season or is that a bug?
If it's intended, its gonna be an absolute pain to collect all of the other boss drops.