Thanks for your suggestion, hey everyone else if you like this, then vote up the question for the development team to see it.
This really needs to be broken into 2 ideas, especially as there's already a higher-voted suggestion for one of these two: http://answers.presonus.com/7607/tape-repitch-sampler-turntable-mode-for-timestretching
If this idea were just for pre-fader metering as an option, I'd vote for it.