Here is a simple tip that most people overlook when mixing down in Ableton Live. If you hover the mouse pointer above the faders and below the sends you can grab the dividing line (see the pink arrows) and drag upwards to make your faders longer. I also like to click the Show/Hide triangles (see the red arrows) and hide the Browser and Clip Views.
If you want to focus on an individual channel you can drag it wider or if your running out of room you can make tracks super thin (see the orange square). You can also Show/Hide the In/Out section, Send/Returns, Track Delay Info and the Crossfader by clicking the small icons at the bottom right of the interface (see blue arrow).
I like to mix by ear as I am making the song. Then I create a mix view like above and see if anything strange is happening like the snare being 6db louder than everything else (it happens all the time!). With the channels fully stretched you can make tiny adjustments in volume and fine tune what your ears were telling you.