Hi there. I am a big fan of modal tunings. I started from standard tuning to explore dadgad about 20 years ago; I still use this tuning for some celtic related tunes. Then I explored further the way to "detune" a guitar. I stumbled on a DGDGCD that offers intersting possibilities, including in blues. Another weird tuning I use is CGDGCD which turns out to be an interesting modal or neutral C tuning. It makes the guitar rumble like a cello, provided that the machine is strung with heavier bass strings.

Alternative tunings have a book. If Auxiris reads this thread, he (or she) can provide the reference.

All that to say that these droning tunings do not limit the kind of music that is playable.

Salut,

JL