Although Feral brings up a nice point:
I'd kill for like a Yggdra Union with an extended storyline to get into more character development. The characters themselves have more development then say, the legion of one man armies you get in Fire Emblem, but a huge chunk of them is forever going to be unknown...
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Like we all wanna know what's up with the Aegina, Luciana, and Yggdra thing. Srly.