Good system.
It is fair and transparent. Everyone gets their turn to be near the top. The only exceptions are those who chose to do other things in their previous lives etc etc. That, of course, was their decision at the time.
I do sympathise with those who never make it to the top of the list but no-one has yet proposed a better system for us and I think you'd find the majority of BA pilots in favour of retaining it.
Best wishes,