as a Logic user, I have taken to instantiating a gain plugin on each track after I import. I leave all Faders at 0 then play the song through from start to finish.
Once complete I investigate each track peak and adjust the gain of every track so that -18 db is the max peak for each upon the next play through. This ensures two things straight out of the gate: 1) my plugins will not clip internally as easily and 2) my fader is still at 0 which is maximized resolution. I have better control over any subsequent moves in terms of +- DB when I set up a rough mix which is the next step before adding processing.
At least that's where I'm at as of today. Would love some feedback on this, let me know if its just a long way around a short cut please. LOL