I just started poking at this mod in combination with Schall Uranium Processing, and I noted that the MOX fuel cell recipe requires Schall's Highly Enriched Uranium, which in Schall's mod should only be necessary for weapons. Real life MOX fuel doesn't require highly enriched uranium. It doesn't even require low enriched uranium; plutonium adds the enrichment for MOX fuel. I understand the purpose of the breeder fuel cell recipes is to use depleted uranium to generate bonus plutonium, so it makes sense that the MOX fuel recipe requires enriched uranium.
Is it possible to tweak the compatibility with Schall Uranium Processing so that the MOX fuel cell recipe requires Low Enriched Uranium instead?
If it helps, I might be able to poke at the mod code a little bit this weekend to see if I can figure out a starting point for this.