The intent of the FPL policy is for union peeps not to be enriched over that of the line pilots. When I read the language, the intent is pretty clear.
If they should get a 45 hour line value. thats what they get. if they get a reserve line, they should be paid accordingly. reserve guarantee.
"concessions" to line pilots should be also felt within the ranks of ALPA reps.
Negotiate the deal, and work under that deal.
It's just the right thing to do.