I was wondering if spare heat (as in heat that can't be used because my weapons/armor have a full "heat bar") could be used in making fire crystals? Basically when you get heat and your heat bar is full, there is a crystal symbol next to the bar that fills up with heat instead. I don't know how much heat it would take to fill up the crystal, maybe 3-6 extra crystals at the end of a floor?
Of course 5* weapons/armor would make 5* crystals and 4* weapons/armor would make 4* crystals, etc.
I state again my idea.
every [insert amount here] of heat would make the chance of a successful forge greater, even by 1%. reward chance would not be affected. maybe a cap of 75%, so the minimum for 100% is the second step. that woudl slow down porgression just right.