Brown Jenkin said:
With Healing Surges though I can’t see parties pushing on if they run out. With the pre-gens we see the number of Surges running from 6-13 depending on the characters. In order for a battle to be at least somewhat challenging I would think that each character would likely have to use at least one if not two or three Surges to either get though the battle or heal up completely after the battle. If characters don’t take at least some damage it probably wasn’t that challenging (in 3.x characters could go all day if the challenges never did much damage either). Given the number of Surges it would seem to me like after 3-4 battles most characters would be out of Healing Surges and need to take the 6 hour rest to recharge Surges.
I don't get it. If the number of healing surges run from 6-13, and you consider that if each character needs to use at least 1 surge per encounter, from where did you get 3-4 encounters per day? Based on your logic, we get at least 6 encounters. And that's already a good number.
But I think your logic is completely flawed:
"I would think that each character would likely have to use at least one if not two or three Surges to either get though the battle or heal up completely after the battle."
If they need to use two surges, that means they got bloodied.
So all characters need to get bloodied in every combat in order for it to be a good challenge? I don't think so. That's too much damage. And also badly distributed damage. Controllers and strikers, IMO, are not supposed to get so much damage as defenders and leaders. An encounter where the Defender and the Leader got bloodied , the striker lost 1/3 HP and the controller wasn't even bruised, was a nice encounter.
3.5 considered an encounter to be balanced and challeging if it drained 20% of the character resources (HP, spells, magic item uses, etc). One healing surge heals 25% of the character's total HP. So if, based on your idea, each character needed to use one, two or even three surges per encounter, that means spending 25%, 50% and 75% of characters resources per battle, and only HP resources. Even if 4E changes that math, it's still way beyond! As I said, too much damage per encounter.
The base of all your argument is wrong.
I believe Defenders' surges will end before the other characters surges. They take more punishment, they are meant to take more damage. The number of encounters the party will be able to face per day will probably be limited by their surges, and they have a lot of it.
The amount of encounters will be based on the capacity to keep the defenders in shape.