Thank you - and this is a sharp catch. You pick up everything up to legendary on the slow lower strata, but the fast upper strata fly by before a legendary can roll, so completing the upper-strata collection is basically impossible. The rarity roll isn't accounting for how little time you spend in the shallow layers. I want every strata to be collectable, so I'm looking at weighting rarity per-strata (or a per-layer pity roll) instead of a flat chance. Quick question so I tune it right: are you trying to complete a per-strata collection, or just chasing legendaries in general? Patch in the works.