Help me understand the benefit of a delayed damage pool.

[StSword]

Okay, so the order goes:
Enemy attack damage -> DDP with excess hitting any THP you may already have and then HP
Your turn: Use Berseker for new THP -> Damage Hits New THP -> HP.
And since healing heals regular and nonlethal damage at the same time then, if you have the talent that makes the DDP nonlethal, at the start of your turn any excess damage that went to your HP would be healed while also subtracting the same amount of non-lethal damage from the DDP.

Thanks! I am definitely sold.

Oh it gets even better than that with the endure pain talent.

Invigorate with the painkiller talent from the Life sphere grants temporary hit points and heals an equal amount of nonlethal damage. Which doesn't cost a spell point, just a standard action.

So you have a meat shield that can be healed of that nonlethal damage whenever its convenient.