For many months, I've been playing my guitar tuned G-D-d-f-g#-b:
| G (+3 above standard) | D (-5 below standard) | d (standard pitch) | f (-2 below standard) | g# (-3 below standard) | b (-5 below standard)
I've fallen in love with this tuning, which I call 12-key flat-finger tuning, since it allows all 36 major, minor, and seventh chords (and many others as well) to be played as full-sounding 5-or-6-string chords, with the root strummed first, using "flat" fingers assigned to consecutive frets, without having to go above the ninth fret. While the tuning works best in key signatures around D major or B minor, it can (unlike standard tuning) easily be used to play chords in any key.
Here is a simple chord diagram [it shows one way to play each chord, but alternatives are available for each chord]
Has anyone else ever encountered a tuning like this before? If so, what's it called? If not, what would be the best forum for me to describe it in more detail?