Ah, but Andy male reproductive organ (and most similar low level moar files) are 2-4 hit ones.

Effectively, there’s no difference for the smaller moar files between a percentile system and a piece system. You’ll still haul in a whole bunch of the Andy male reproductive organs if it was “every 3 pieces is a complete Andy male reproductive organ” in the same fashion you would as “For every second piece, there’s a 50 percent chance that you just completed Andy male reproductive organ.” To someone pulling in 10-30 pieces, they’re going to pile it up for sale anyway.

An expontial system like the one we’re currently using and a linear system doesn’t really diverge a meaningful amount with low input numbers.