"Obtaining the Magus Sisters" was the first one eliminated. My thoughts:
I'm generally not a big fan of the Belgemine Aeon battles (Or one-on-one Aeon battles in the game in general) because they are pretty limited. It doesn't really take advantage of FFX's great battle system because of the one-on-one format. Plus, the fights themselves are usually not that difficult. The sequence of having to beat all of Belgemine's Aeons is kind of repetitive and not all that interesting. I mean, yeah, the Magus Sisters are a great Aeon and a nice reward for doing it all, but there isn't much storyline value other than figuring out that Belgemine is an unsent.
So yeah, while it probably shouldn't have been the first thing eliminated ahead of some of the Celestial Weapon stuff, it ranks pretty low for me among the moments in this contest, so I'm not too bothered by it going first.
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"I couldn't stand a day without a past or future. I need to live each moment to keep fighting here and now."