I started with D6, up a whole tone from 'standard' C6.
D6
1 E
2 F#
3 D
4 B
5 A
6 F#
7 D
8 B
9 G
10 D
I then lowered the middle strings 5&6 down to E & G and put the original F# & A on a lever. ( RKL )
So the tuning went straight to open G6 with that one alteration, and the lever 'restores' the open tuning back to D6, while also creating a C6 pedal 7 style effect on the G6 by introducing the maj7&9 chord tones. I also reversed the order of strings 1&2.
The first pedal is set up a bit like a C6 pedal 4, but against G6, and it sounds great in this tuning register. The next 2 pedals are more or less diminished pedals, inspired by what would be something like pedal 5 & 6 on a C6 or D6 set up. I like how the middle pedal creates a pretty straight dom7 and the 9th tone can be added with the first pedal.
These two pedals fit perfectly in this G6 scenario.
The tuning is super intuitive, and lines up with an E tuning in many ways as you can see.
I don't have a pedal 8 boo wa sound. If I had 4 pedals I'd probably set something up that combines with RKL and drops string 10 down to B. I suppose in that case, I wouldn't raise both D's on the left, just the bottom one to be a major 3rd. Fortunately, the 7#9 business is available on pedal 2 & 3 if need be.
Anyway, really digging this set up!