Back then to get loudness and density you cranked to volume to 12 o'clock or better instead of having some mastering engineer do it for you and create perceived loudness thanks to the digital era.
When mixing I feel I am not trying to impart my character on the music but rather enhance the individual song and put my spin on it sonically based on my musical taste and experience. My mix decisions are based on what I feel the song needs to enhance the excitement, energy and mood. I am not worried so much about balance as I am about how everything works/blends together. Contrast is a good thing and adds to this. Creating energy means getting things right in the 1k-8k range, creating space/clarity, and balancing in the low end. When I feel I have achieved this I add the "sauce" (effects etc.) and I 'm done with the mix. Most times it comes together in a day or so depending on the type of song. If it goes beyond a few days I have usually had too much fixing (performance edits) and spent too much time on a mix before reaching a point of relative satisfaction. I find that excessive fixing with mixing is a combo that can cause a song "to get away from you" and it can be hard to reel it back in to end up with a good mix. Usually I have to leave the song for a few days and come back to it if time permits.
Deadlines aside I think Bruce Swedien said it best about time spent on a mix....
"How long does it take to do a mix. - UNTIL IT'S DONE!!!
One thing I'd like you to understand. It's much easier to be done than to be satisfied!! "
Nice! but what about automation? most of the "sauce" comes from there IMHO