One of the reason why people write Ranma so much is because of the great
varity that Ranma represents.  Although I could say that I am being bias, I
think that Ranma has the most possibilities for a fanfic out there.  Also
Ranma is more widely known than say DBZ or Nuku Nuku.  

This also goes for crossovers as well :)  

I will agree that lately there have been way too many Ranma crossovers, Yes I
shouldn't be the one to speak but it has become harder and harder to find a
nitch where an author can write an original fanfic theme.  BGC is a bit
restrictive when writing a fic, so are a few other series as well.  There are
just not enough information to go around.  Crossovers open up possibilities
that never existed or if it did, writing about it would not help much due to
lack of believability.  

I might be wrong but somethimes being the first to write a fanfic about a new
series is a bit hard.  With Ranma and SM there are many out there and people
can be inspired by other poeple's work.  Some author will write and hope for
C&C from readers and usually new series which people know little or nothing
about will not create a release or encouragment to the author.  

I do have to agree with Pmasters though on the issue of new blood, new series.
We can only take Ranma, SM, EVA, BGC, and TM so far before there will be
repeats in theme and plot.

Anyways, has anyone done a Tenchi fic where Achika does not die after giving
Tenchi the gift/power?  

Long