I just made a similar request, but I asked to add an input gain/trim function on the free VU meter plugin (
http://answers.presonus.com/6306/input-gain-trim-function-on-vu-meter)
I use the VU meter to see where my levels are when gain staging, but currently have to either adjust the audio wave volume, or the VST output volume to hit the "sweetspot". The VU Meter in micro view with an input gain control would be a godsend. Please vote for mine if you would like this feature on the VU Meter as well.
Thanks.