about the origin of ultimecia (big big spoiler)

[Christmas]

i actually think that Ulticima is the daughter of squall and rinoa,as they do look sorta similar in appearance,but she has some of squalls facial features(well i think,by looking at her face).

Not possible as daughter considering the time Ultimecia live in..maybe great-great....grand daughter.

which was how the sorceress hyne actually died, at the hands of ulticima,

She killed Hyne? From my research, no one ever seen Hyne after he gave a bit of his powers to the mortals. But look at this, Ultimecia received a part of Hyne's powers and even she did some research and increase her powers, it will be little possibily she can overcome Hyne by herself since it is Hyne that give her the powers. Of course, the human overcome Hyne in history but only by unity of the entire human race against a rouge sorceror that is but they never manage to kill him.

and also elimintaing the solomon family which had some sort of great power,but she overlooked it and discared their coat of arms (Solomon ring).

The solomon ring really play a tiny part in the game and it is just an optional item. But why do it came in the form of a train and why it is just so nice that it is in the tear points?

After modifing history to her liking she fixed it so that she could try and stop her own birth to prevent her pain and suffering.
well those are some theories that i'm still not to sure about, and i'll probably get flamed for it,but i'm posting my veiws.

This one is my favourite, Look, when we have regrets, we all hope that it will go away and even you manage to forget it, the scar in the heart will alway be there. The only way to eliminate regrets is never to let regrets happen in the first place. Make sense though... (and I am not FLAMING you..)