[Jacco]

It all depends on the circumstances: you seem to be in the high-volume production segment of the market. So you can't afford any more time in PP then what's strictly necessary. 'What's strictly necessary' is dependent on the customer's wishes and expectations.
It's almost photo journalism.
But not everybody is in that market segment, Songman! In fact very few people are. You're a minority. So don't confuse your particular situation with everybody else's. Most people don't have hi-speed high-volume production environments!