Through owning a fanned fret guitar, if there's anything I've noticed to be more important than the actual scales used it's the location of the perpendicular fret. I hypothesize that moving the perpendicular fret towards the nut will allow for scales of greater difference, yet retain ergonomics and overall playability. It'll allow for more traditional fingering of chords on the lower frets yet still give them an ergonomic fan, in the vein of Strandberg and other minimally fanned guitars. It'll also increase the fan in the higher register, which depending on how you position your thumb when playing can increase ergonomics when playing single note runs. I'll report more on that when I get my Strandberg.