Hello again! Been enjoying the mod quite a bit. That said though, I have noticed from playing with EI a bit further (setup a full iron-ore -> crush -> leaching/solution -> recrystallization -> iron-plate -> steel-plate production line prioritizing the use of byproducts), to which I found the amount of byproducts to be a bit much for the recrystallization step specifically - that is, if the math I did was correct, it's actually sulfur positive for the amount of sulfuric acid required.
Thankfully the recrystallization byproduct probability can be configured, but unfortunately not for the sulfur byproduct. I found reducing both by a factor of 5 - 7 or so seems to have put them at a good level for the moment (50% -> 10% chance of the alternative enriched ore, and 35% -> 5% for sulfur).
Another thought, would be to either increase the sulfuric acid requirement, and/or make it a configurable setting.
As far as configurable settings, would it be possible to add settings such that the byproduct probabilities can be configured independently of each other? i.e. a setting for sulfur from iron recrystallization; a setting for copper from iron recrystallization; a setting for sulfur from copper recrystallization; and a setting for iron from copper recrystallization.
No rush on this either, as I have already created a small local mod that makes the above probability changes for the moment.