I've been gradually moving all track faders down together in a mix, in order to bring the master peak level down. A little here, a little there. And all tonight I've been fighting with a niggling muddiness in the song, until it dawned on me that I didn't bring down my reverb sends on each track in the same proportion. So I muted the reverb bus, and wow, there it was, all of the earlier clarity back. No problem of course, I just brought the reverb bus fader down until the reverb was at the right level again.
So wouldn't it be handy to be able to dial in a send level as a % of the fader level, so that when you move the fader down, the send level goes down with it? Rather like the send pan being tied to the track pan?
Disclaimer: I'm on NO sleep. So there is the possibility I'm just talking out of my backside
Update: It appears that yes, I AM talking out of my backside. Pre/Post etc.
Goodnight everyone!