Before I say anything let me tell you I am terrible at writing and explaining things so sorry.
1:Hard and soft water.
Hard water:Found near mountains makes higher quailty products but does damage to the item that is used to make the product.
Soft water:Found everywhere but mountains. Just like water is now.
2:Have a toggle grid, its really annoying planing out things not being able to count the squares so this would be helpful.