Well, here's a bunch of assumptions I've come up after seeing Episode 1 over and over again. Then again, I might be over analyzing some extremely little minor details, which please don't kill me, just correct me.
[Hide] 1. I'm starting to think there's some sort of bond between Seiya and Kouga, besides the fact that they're both Pegasus. The following can be reasons as to why I think so:
A) Kouga seems to have a huge amount of hidden or locked Cosmo inside him. Now, correct me if I'm wrong, but Mars also saw Seiya in Kouga. Is it possible that Seiya's spirit or some form of power is left inside Kouga? Maybe that's how the words for the Pegasus Meteor Fist came, the moves, but then again, it could just be baby Kouga's memories kicking in and acting on reflex.
B) Seiya is possibly the father of Kouga. Except, no one's told him. I mean, think about it. Saori kept the Pegasus pendant on her, which she looks at when the topic of Kouga becoming a Saint was brought up. The entire thing with his "fate to be a Saint" might be referring to the fact that he's Seiya's son. That might be why Mars saw Seiya in Kouga and probably why Kouga sees Seiya giving him guidance, the connection between father and son.
2. I think Saori is more than what she seems to Kouga. Could be just my wishful thinking, but I have a feeling she might be Kouga's real mother with Seiya as his father (again

). After all, this might sound really stupid, well it is stupid, but Purple hair + Brown hair = Reddish Pink hair? I don't know, wild guess. Maybe that's why she keeps him training alone by her side in hopes he will turn into the Saint that his father was. I mean the way that baby Kouga just happened to wander into Sanctuary to Athena in Greek outfit too (with the whole mini shoulder pads thing going on) and he just walked to Saori happily, like he knew her. Part of me thinks they keep his identity a secret because Mars might take advantage of that and use Kouga as well. Might be why they want Kouga to become a Saint, so when he knows who he is, he won't be so weak to not be able to protect himself. Plus, I think I heard Kouga say something like "papa" or "pa" when Seiya starts to fight Mars. Might just be my ears though.
3. I don't think Seiya is dead at all. May seem like it now, but probably somewhere else or maybe him and the other Gold Saints went on some sort of mission to Seal Mars, and now that he's released Kouga and **** might have to go find the place where they all went off to seal the guy and unseal the Gold Saints from it also.
4. Something tells me from the opening scene that we might see some other characters become Gold Saints besides the 5 we know and love. The opening shows at least 6 or 7 Gold Saints standing in the fire, if you look carefully. My guess is either Jabu, Kiki, or a new character has taken up a mantle. I can't seem to identify Ikki at all though, despite having already spotted Hyoga, Shiryu, Seiya, and Shun.
5. There could be someone bigger than Mars. I just have a feeling that he's just the one doing all the kidnapping. He doesn't seem so intimidating as they make him out to be. I mean, Seiya could go toe to toe with him, and he is also surprised by Kouga's newly discovered Cosmo as well. [/hide]