Mark Doherty wrote:

At 07:47 PM 16/10/97 -0600, David Johnston wrote:
[snip. Re Ranma/Tenchi X-over idea]

Seriously though, you're going to have to build a history for these new
characters that will fit in with the rest of the Ranma craziness.

It's a No Need For Tenchi Crossover.  Essentially, Ranma will join
Ryoko and Aeka as a potential candidate for Tenchi's eventual
matrimony.  Frankly, though, I don't think Ranma can compete.
Her distinct lack of enthusiasm for the prospect of marriage
to a guy tends to make it unlike, even though she could do
pretty well in the fiance brawls.

You're forgetting one of the important laws of anime romance:
It's always the one who wants it least who has the most chance of getting
it(referring to either sex or marriage with another character). ^_^

Well, yeah, but she's a lesbian.  Isn't that going a little over
the top?  

(S)he'd need a power boost, that's for certain. Perhaps Washu could

Not a problem.  Ranma always becomes as powerful as she needs to
be to match her opposition, once she's had one humiliating encounter.  
She'd learn that ki thing in a hurry.  And I would rate her ability to 
get out of the way as pretty superior, and far more important to her 
survival prospects.  

experiment on Ranma, and accidentally(or purposefully) create a link
between his(her) ki-generation and the magical energy of the
Jusenkyo spring, giving her a huge power boost, especially since the
curse is in permanent mode for some reason.

Or, you could go for the "always had the power, just never used it."
option. Or give him(her) one or Ryoko's gems. ^_^

That could work.  After all, Ranma usually tries to duplicate
every opponents power source.