That's not what I meant, but for having posted several times on this thread it's amazing that you haven't contributed one bit to answering the original question. Maybe using high and low pass filters seems over complicated if you don't use any eq on guitars, but who seriously thinks they can capture a tone that will sit exactly how you want it to in a mix? Be it guitars, or else.
If your (or anyone else's tip) is to capture a better signal going in, so be it. And that's great if you record your own stuff. When you're given a project to mix, you work with what you got, and I'm after the techniques that help open up a mix a bit. Maybe it's less buss compression, mid/side balancing, better eq, etc. maybe it's using a lower tuned snare so the stick attack doesn't land right where the bite of the guitars is, helping it cut through better, maybe it's all those things, I don't know. That's why I'm asking.
Thanks all again.