Being able to only hold 1 offering, the offering being cancelled if everyone dies, losing you offering when you fail the event. All of these factors force players to play a little smarter, because you might not get another offering right away. You can't just die and everything will be okay. You won't get the loot you're looking for as easily, you need to pay attention and be active in the forge. If thats not an increase in difficulty, I'm not sure what is. It's like saying no revives in hard raids doesn't make it more challenging. Like, what have you been smoking?