..."Assuming sufficient runway length why restrict and deny myself an option of aborting takeoff at speeds much higher then V1..."
Have you considered brake energy limitations...? Take a scenario of max gross weight and abort 20kts beyond V1 [Maybe you've briefly rotated and put it back on the pavement]. Now you're "off the charts" because you're over max landing weight and rolling faster than your normal max landing weight brake application speed. Your brakes will go on vacation before a full stop. And then you'll be standing on the pedals, but just continue rolling and rolling. Think about it.
