Whoa, you're completely right.I see it more like a conclusion, since that is what Nomura wanted us to see; an answer to what their relationship is and all the questions about it. Its funny though we got an answer for Cloud and Aerith but when the situation was on Cloud/Tifa didn't Nomura say he had "No clue" if Cloud and Tifa were ever in a relationship?
We did get an answer for Cloud and Aerith's relationship while Nomura said he had no idea about whether or not Cloud/Tifa had ever been romantic. That's a pretty amazing point you've brought up. I also find Nomura's ability to institute symbolism, hints and the like into these games amazing, Aerith and Cloud are reunited twice in a game about hearts, love and finding your light/Whats most important to you -- as Nomura said:

Oh my word T_T You just made my day.
It's amazing to realize that. Think of how romantic that is. Cloud working with Hades to find his light(Aerith) then reuniting with her in a game about hearts, love, lights, and what's most important to each individual character. I'm seriously just speechless at how poetic and romantic they are. T_T
Yup, yup, yup! You've brought up a good point. A very good point. These romantic themes can't really apply to Tifa if she doesn't exist in the game or story. And once again, you're right, the scene between Cloud/Tifa/Sephiroth is optional, it doesn't have to happen.Not to bring Tifa down or anything, because I love the girl, but Tifa isn't even real in this KH!World, how could any of these themes apply to someone who doesn't exist? And only has an optional scene with Cloud in the Series anyway? Something here doesn't quite add up.
Ah-greed!Its non-existent Tifa and her optional scene VS Real Aerith and canon scenes. I think all this speaks volumes for itself ;/
Now, my turn.
What are your thoughts on the parallel ending for Cloud and Aerith in Kingdom Hearts one?
Like you, I say it's a conclusion. A conclusion of what was intended. A conclusion of their relationship... and, Nomura said the answer would be seen at the ending. Well, the answer is we see Cloud reuniting with Aerith, we see Cloud make his way towards her, looking to the floor(probably out of nervousness) as Aerith too is making her way towards him. And just as they look to catch each other's eyes, the music hits a climax. (not to mention this is all happening while other couples are reuniting)
Answer to their relationship is supposed to be found in the ending... and at the ending we see that they're together.
If they didn't want it to be taken as romantic(like the other couples) why even show it? Why specifically give Cloud and Aerith their own 15 seconds of a close up, showing them reuniting just like the other Disney couples? Like you pointed out, it's definitely hinting at something, that's for sure! 





Good point, girl.
Not to mention, Cloud and Tifa NEVER act like it happens. That's a little odd, if you ask me. Especially if it declares their ship canon.
will try my best soon!
I'm lost on a theme to take.