i was thinking that it would be a good idea to exchange heat for hearts at certain points in maps so if you don't need to level any more waepons up and you just need money then during a run you can exchange unneeded heat for useful hearts.
simple but great!
We already have pills to heal at the middle of a run. And if you want to exchange heat for hearts at the elevator then the hearts and the full health on the prizewheel would be useless. I dont thing that this idea would be implemented because of the way things work right now, but i do think that for those who have already things at level 10 heat should be used some way. Or people with lvl 10 stuff shouldnt pick up heat, at least that way they wouldnt mean an obstacle for other teammates.