I know this gets a bunch of heat, but I had a suggestion that might even make the "hardcore" people to agree.

This has been viewed with a dual edge sword. One one half they feel it would be nice to have around. On the flipside, you got the others saying it would ruin the challenge. So we could handle healing one of two ways:

1. Post floor healing: Once you get to an elevator you could choose to heal up for either Energy or Crowns before you descend to the net one. Not sure how much this would cost though.

2. During exploration healing: For a certain amount of CE you can heal immediately back to full, however you can only do this once every 3 floors and cannot be done during Boss floors.

They would still need some refining, but I believe its a good start.