If they want to maintain a "can't die" policy, fine with me. If they want to add "deaths", that's also great. So long as they find a decent balance between adding that sense of peril, and making it so frustrating and repetitive trying to pass a particular scene over and over again you just stop playing and no longer care about it. If you've died thirty times in the same place, that sense of peril is no longer there, anyway. But mostly that depends on the difficulty level and your (as the player) experience and skill, so there's no way to satisfy everyone.
"There's a difference between knowing you are, and simply being."
Finished: Assassin's Creed 2 (PS3)
Playing now: Assassin's Creed Brotherhood (PS3), The Longest Journey (PC)
To continue: So Blonde (PC), Red Dead Redemption (PS3), Silent Hill Homecoming (PS3)