I don't see any real reason for a hood scoop unless it's functional. +fireamx did a scoop on his car reminiscent of the old AMX muscle cars, but then he's an AMX lover AND he had the thing custom fabricated, not just something tacked on like the on the red Benz. If you feel you really need to do something like that, do it right or don't bother.

As for me, I'd never give up the design of the stock hood - I love it.