OK. So you are introducing a new basis on which to calculate QF pilots pay are you?
787 is not a 767 agreed.
Which QF type has as it's pay basis, wingspan? MTOW? seating capacity? speed? weight? range?
The classic? the 747-400? the B767? the A330? the A380? the B737?
IMHO it's not a particularly good time to introduce a new methodology, making the B787 the first.