Rinoa=Ultemicia Different theory
I was thinking about this after reading all the R=U theories and i came up with this one:
As we all no squall and friends go on a jouney to defeat ultemicia, etc and then later kill her. Then rinoa goes insane after she cant find squall in their promised place so she uses her powers and TC and goes to the far future (or she lived a long life) and then tries to find her long lost love but during the time gap she forgets about him and only wants to control all time thus TC.
While Ulti travels thru time she ends up in the time period at which she actually became wat she is today (ff8 story) and it repeats itself again with squall killing her, rinoa goin insane, time goin in a circle.
PHEW! ok done