Ok, showing my age here but I was around for implemtation of B767-300 ERs with my group. Over the years I found them to be strong, comfortable, reliable aircraft. Only thing stronger was the DC10-30 and 747.
Are they really past their T/X. They're all mostly paid for with the legacy carriers. Are mtce costs sufficiently high to justify replacement for exactly what benefits?
I don't see similar new aircraft replacing their role to a significant advantage. OK, B787 has longer range - is that enough to justify a replacement cost?