Sorry, but I don't see how inverting almost everything makes sense
You hit a drum, you get a negative pressure travelling towards your ears.
Your mic picks that up, and produces a voltage that starts out negative.
That sounds like an ideal situation. Why would you screw that up by reversing the polarity on most of your mics?
Chris
You are mixing from the perspective of the drummer, I doubt 90% of the audience has ever sat behind a drum kit never mind play it as an instrument. I setup from the audiences perspective which is normal for most of the people, whether you invert 3 mics or all the other mics is irrelevant you can invert those I leave normal and get exactly the same results.
I'm mixing for the audience not the drummer, I want a compression to hit the audience first from the drum kit instead of a rarefaction, I feel it makes a better experience for the audience YMMW and I thought that the point of this forum is to give different approaches so people can try different ideas to see what works for them.
I would say try it, I've tried your method before, I don't like it, it's not wrong, I just don't like it. You might try my method and hate it and that's fine too were creative people and have the knowledge to justify either approach.