Four Grahams Mandubien's mix

[konop_tnt]

I listen with headphones. Drums could be more punchy, acoustic guitars on the left is to loud for my taste. Regarding loudness. Peaks on your mix are at least few db lower than 0dbFS, so you waste some resolution and S/N ratio. If you take care of peaks you will gain another few db and IMHO it has nothing to do with loudness war. I'm talking about gentle peak reduction.
Where I can find those new rules for mastering?