So I ask you all, Sailor Moon Fanfic writers, should she remain a mystery?
Or should her past be exposed, and twisted, and cut away until there is
less of a life there than Usagi has?

I think I'd like to see that, I'm in a dark mood.  However I'd just like put
say a couple of things.  

Steer clear of adding siblings like a "Sailor Chronos" or some such.  I've
seen stories that put a rather wierd and unrealistic spin on Pluto's family,
Usually these siblings are evil in nature. 

Another thing that should be avoid would be having Pluto's parent(s) have
powers of god like beings...

So yes, I'd like to see Pluto demystified and possibly given some of her own
medicine but do it creatively.

Doug