Speed is worth a line, thats about it.
The winner in the 3-DI World's was shooting 282fps.
5 grns per pound provides for safe equipment standards and allows for continued equipment development.. Equipment today is much stronger and more durable than it has ever been, allowing that equipment to be more forgiving and accurate than ever before.
To limit performance will guarantee a different color of bow every year instead of a new cam, limb or riser design.
ken12