Let me reply to the first post:

Ok, we have already explained in many other threads that a consciousness is sent ot the past, they only view the events at hand. Also, SeeD was created to get rid of possible danger to the world and edea had them established in case if she lost control(of her powers) this is why she had white seed around her before she was possessed. This is in the game ppl just so some of you don't know.

Ellone did not know of the full potential of her powers till some time in the game. For instance, when she took Squall to rnioa in space. She did not know if she could send him to somone that she didn't know. Also, when she ulti and another person( i forgot) to a different time and brought one back. She had never sent a consciousness that was outside of its body already plus another persons consciousness to the past before.

I didn't read the whole thread yet so this might be late.