Okay, so I'm sure we've all hit the point where all our current gear is max level. All that Heat we build up is just completely wasted (though I have gotten myself killed a few times to let party members who still need Heat take some of mine through resurrecting me).
What I propose is that when the Heat you've collected doesn't have any gear to go into, it gets converted to Crowns instead.
Now, just how much is debatable, but we should get SOMETHING out of it.
And when we're running the Clockworks over and over, we're generally doing it to make a buck. All that excess Heat should be used for something.
I need another use for heat. SO much of mine went to waste. I don't care what for, it can be 10 heat for 1 cr for all I care, I just don't like seeing it go to waste. Craft lesser mats to better mats with heat instead of energy, store it, whatever, I just need another use...