Well I can't get my hands on urine
unless I make it or use FILTH_Y and a crap ton of reactions to begin a "aging" process lol.
Potash I might use, but I have a "Quarry" building where you can dig up Brimstone and Saltpeter if you can make the tools for it.
In Regen you can get basically any natural resource in the game, if you got the resources to make the tools.
It's kindof a trade off, you got a ton of metal, but not enough coal?
make some tools, and dig for coal in the mineshaft.
Need flux no problem dig for it.
need iron to make steel? dig for it. etc
But tools break, so making one set for a large mining operation wont last long.
Since Regen has been geared towards Industry atm, but soon it will be magic too. And tech.
After that has been balanced out then I can start on adding in the new races.
But I might make Potash a Saltpeter subsitute