How will Ukyo deal with the fact that Ranma
loves Akane?

Apparently Ranma doesn't love Akane all that much.  I think we can 
safely assume that Ukyo isn't going to react to her insecurity by 
regularly beating up Ranma and eventually killing Ranma and Akane.  
Elegant though the symmetry might be.  Nor does it seem likely that 
Ranma and Ukyo will live a life of quiet desperation, both aware that 
Ranma made the "wrong" choice.  

	Well as I saw it, Ranma's entire decision to leave Akane was 
because he was convinced that she would be happier without him.  Ranma 
cares enough about her happiness to sacrifice his own.  It's just that his 
conclusions on what would make her happy were based on a moment of 
hyperexagerated anger which he thinks is her actual feelings.
	Of course in LaWR Zen talked about the year after his previous 
fict.  THAT time period is what really needs to be examined.  The 
foundation of most of the fict is in that period, and it's left prety much 
to the readers imagination.  We have to assume that it was during that year 
that Akane's temper was enhanced, and Ranma and Ukyo actually went from 
Ranma thinking of Ukyo as a frined and Ukyo thinking of Ranma as her fiance 
to the two of them actually being friends.
	Well one thing that would be interesting to see is Ukyo actually 
geting to know Ranma.  In the Manga she basically assembled all her ideas 
of an ideal man and slapped Ranma's face on them.  As she learns how Ranma 
doesn't match her ideas of how he should be she wouln't get violent toward 
Ranma, but she might get less enthusiastic about trying to push Ranma from 
friendship with her to actual love.
	Actually if you want some Bitter End symetry, you might want to 
consider the Robert Frost poem,  I think the  title is fire and ice but I'm 
not sure.  Basically Ranma and Akane's relationship in BE was Fire.  It was 
passionate, but the emotion became wild and eventually destroyed them.  The 
Ukyo Ranma relationship is ice.  It's calm and rational, and it's end would 
be so calm that it would be impossible to select any one moment and say 
"Their relationship ended today."
	As I see it the Ranma Ukyo version of BE would have them married, 
Ranma helping Ukyo in her shop and practising his Martial arts whenever he 
had time off.  Then he would either hear about a local SF type torunament 
or simply build a Dojo and start teaching.  This would slowly take up more 
and more of his time and effort untill he was doing it full time.  He and 
Ukyo would see less and less of each other, Ranma wouldn't mind since he 
was doing what he truly loved and Ukyo would get used to it.