We still haven't crossed the 2/3 threshold between ES and PS, but we're now consistently in that range. I know the thread hates the idea of raising ES to 60 to create substrate because it messes with the pyramid, and we spent so long chasing it (even if we did become rich along the way). But unless we don't time ladder (which has different issues), or hack a stunt/variation that makes making runes easier (and there's a bunch of this we want to optimize on ES, and we'll only get one first shot before it becomes a lot harder), that's going to be a restricting factor soon.