Is ANYTHING best served by having takeoff thrust less than climb thrust?!?
While I recognize the need to reduce thrust for engine life considerations, reducing it below the level that will be used for a prolonged climb seems a bit ludicrous. That is especially since most other safety factors (excess thrust, stop margin, screen height, climb rate...) will also be reduced. While peak noise may be reduced, it will last longer, and it will be produced at lower altitudes for a longer time.
IMO, takeoff thrust reductions should be limited to the planned climb thrust.