It can't be just me.
It seems that people have been choosing all other minerals over our poor, sunny friend Luminite, and it seems to show in all the strata that appear. It's all been Dark Matter-aligned themes as of late, and anything that happens to be Luminite-aligned could have come about from ANTI-MINERAL DISRUPTIONS.
Okay, that's sorely empirical observation, and it's likely to be flawed, but to humor my paranoia (but not just to humor my paranoia), could maybe some of us perhaps gather Luminite for the next few weeks or something?
Or if not, we can talk about making Tier 2 strata not suck so much. I'm tired of undead and fiends.
You can tell which minerals are being avoided by seeing what pays the most in the Arcade gates. Luminite is almost always at 4/unit, while Dark Matter is usually at 2/unit. I suppose that when you think about it, that has to be intentional.
Personally, since I'm a veteran KoA grinder it actually helps to have a mineral I know will pay well, but I imagine those dedicated to the original Clockworks would find it frustrating. Fiends aren't entertaining at all, and undead are only marginally better.