Rafe
First Post
I think that, by the time your healing surges are depleted, you've probably been punished enough. If you don't have a surge to lose, don't lose it. If they're truly getting into the game, they should be worried enough by the time they reach that point.
If they carry on with no healing surges left, they deserve to be punished. They need to find a spot to take an extended rest or ought to have done so before hitting that point. I have yet to play in a 4e game/session where the lowest person didn't have at least 4 healing surges left, even after a few encounters in a row.
So I say again: if the party has gotten to the point where they have no healing surges left and they're still going, keep hitting them.
As for losing the surge value in hp, though, be careful about punishing Dragonborn for having high Constitution. You might keep it a static value (5 per tier?) so that ANY characters with higher Con aren't punished for being more durable, either.
How is it punishing any one character? A healing surge value is 1/4 of hp, regardless of class or number of hp. A Wizard with 24 hp is losing 6 and a Fighter with 32 is losing 8. 1/4 is 1/4.
However, I certainly agree with the second part. 5 per tier sounds good, especially given losing a healing surge is not, technically, losing health. Just the capability to heal.