8 Strings - A Really Great Idea!

I think this might be a Really Great Idea. 8 strings with the range of a standard guitar, and most of the capabilities of a E9/C6 double-ten.

   LKL LKV LKR  P1  P2  P3  P4  P5  RKL RKR
F#                                  +G  +G
D  +D# -C#          +E      +E
B          +C   -A          +C#
A                       -G#
F#                                  -F  +G
D  +D#              +E          +D#
B          +C   -A
G                       -E      -F#