Ideas…
#1 Sailor Moon, Mimic
While battling something that appears to be a youma based on a
werewolf, mercury is surprised as its intelligence and tactics become
more human like as each Senshi arrives. When Sailor moon shows up the
effect of having five silver millennium energy sources near it cause the
creatures brain waves to resonate and its powers synchronize with the
Senshi's. It turns out that the creature was a young man who was born
with the ability to mimic physical and mental attributes. It had appeared
as a werewolf after a concussion due to a car crash and proximity to a wolf
pack caused his mind to degenerate to animal levels. After he recovers it
is found that synchronizing with the Senshi's powers gave him some of their
basic attacks and that each time he uses them they get stronger. He begins
to become powerful enough to draw the attention of certain "agencies" that
wish to discover how his powers work.

#2 Also Sailor Moon, Survivor.

When the moon kingdom was destroyed a single scientist survived,
having been outsystem experimenting on spatial drives. When he returned
to the capital to find it destroyed he set systems on his ship to look
for energy signatures of the royal families. Finding none he left the
system to continue his research. Being from a long-lived race he still
survives when the silver crystal is recreated. His computer systems
recognize the energy and he turns around to come home. Being that he is
so far outsystem even with his millennia of improvements on his ships drives
it takes time for him to get home. Three years after the death of Beryl, he
takes orbit around the dark side of the moon and goes planetside……

#3 Ranma/Elenium Crossover

After trying to use the broken nanban mirror to stop his father from
putting him through the Nekoken training Ranma finds himself dropped in the
royal palace of Elenia. After barely beating Mirtai when she mistakes him
for an assassin he is knocked unconscious when Danae masks Sparhawk's presence.
What follows is Ranma's life in his new world while looking for a way home….

#4 'Fringe' Ranma/Sailor Moon/Etc..., Successor

An ancient demensional traveler finds himeself at the end of his life
and running from his worst enemy finds himself above earth and needs to
look for someone to take over control of his ship. The ship bonds to the
current owner and alters it's personality accordingly. He finds a
compatible human in a familiar area of tokyo. But this time it's not one
of the main characters from any of these series who's centered by the
insanity.
**Authors note**
This fic I'm actually working on. I'm not sure who I will pick just yet as
I'm starting the revision and new parts of Merging Forces. I'm planning on
putting a poll up with my possible choices and allowing anyone who comes by
to vote on the options and the one who gets the most votes when I finally get
down to writing it will be the one I choose. It should be interesting.