It seems to me that the crucial component of the new pay structure is that the bands are not fixed. If a unit can justify movement to a higher band within the agreed structure then rebanding is automatic (warning: your banding could go down as well as up). More movements should mean more money.
If the formula that determines the banding is open to negotiation in the future there is another chance for units change bands.
The deal is a good one for everyone. It is a better deal for some (the majority) but however you may feel over your units grading it is not worth voting against it. Of course, being at LACC it’s easy for me to say that.