I see you added item replacement for recipes to replace the no longer used vanilla uranium items, but one thing it ends up missing is that nuclear weapons from other mods end up using HEU instead of WGU.

I've run some numbers, and it seems like 1 WGU is equivalent to 4 HEU. It should be possible to check if the recipe produces a weapon (or an ammo), and if so, divide\replace the HEU with WGU (rounded up, if course).
alternatively, round down, and keep the remainder as HEU.

Mmmm, the reactivity of uranium depends on the ratio of the isotopes at the atomic scale... you can't just stack up a bunch of rarified uranium to make a bomb! I'd like to find a way to let you remix back into the stock hex, though, which would let you change the type through recycling. Maybe I can create a furnace entity that does it. I'll look into it.

It's more that other mods are not usually aware that WGU exists, and as such make their weapon recipes use u235 (HEU in this mod) instead. Which is thematically inappropriate.

Oh, right, sure. OK, I'll do something for that.