Longer life = pennies
Absolutely - Yes I don't disagree with this. My comment was not meant to discount this.
it also pennies here. It means that more parts have to be changed more often to avoid the possibility of exploding/catastrophic failure. The end sum is the number of hours that the engine operates at max trust and take off power
Don't disagree with this either.
Both points have been mentioned before.
I still however maintain that less exposure to higher egts and more frequent max thrust means less chance (not no chance) of catastrophic (or even partial) engine failure. Yes, it means more frequent part changes and more cost - but in the intervening periods the engine is still exposed to more extremes.