No quantitative data I’m afraid, but I carried the 777X chief tech pilot to Seattle a few months back and he was talking about design life issues and component changes required due to the way we are flying the aircraft.
The way stable approach requirements and speed control are interacting, Boeing are concerned that routinely taking landing flap and flying down the ILS within 10 kts of the limiting speed is invalidating a number of the assumptions used to size the components in the system. I imagine airlines engineering departments would have data on component replacements vs expected life and such like but sadly they’re unlikely to share it.