I often record for a whole night where the band just plays through. Songs of different levels and intensities are played gains fixed for the loudest most intense moments.
Then I mix. I mix the first song and normalize all tracks to -3 dB and set compressors and so forth based on that level.
I touch bus gains too, reducing some as necessary to keep them from getting too hot as necessary. If I ever see a PC light blink, I reduce inputs or gains.
I make a copy of the project for the first track to use for the second track.
I split the clips in the full project that contains all the audio and bounce to clips then copy those clips to the new project. The new project has all the compressor settings and everything else, but now the tracks are all softer or louder than the last one. I can now normalize all the tracks to -3 dB. This isn't perfect, but it's pretty great.
I can't be the only one doing this, can I?
Now, i'm not stupid. Every track I adjust anything that needs adjusting. Please don't intentionally misunderstand this.