If you had the power to do an update, patch, fix, what-have-you for the Fire Emblem If game, or were able to influence Devs before the release of Fates in other countries, what would be the things you would change?
Personally, I would change the Marriage and Buddy Seals so you would take on whatever class you didn't already have in your repertoire.
Like, If Oboro marries Takumi, She gets Bowman, but he gets nothing because Lance Fighter is his secondary already. I'd make it so he'd get Herb Merchant (Oboro's secondary class) instead. Joker, when becoming friends with Cyrus/Silas/However-you-spell-it, He'd get mercenary instead of nothing. Saizou could become a Pegasus Rider by being friends with Ryouma (I still think it's a little funny that Ryouma can be a Pegasus Knight. Manly man and his pretty pony).
Please, if you have a plot spoiler, put it in spoiler tags! Not for my sake, but for others'! Game mechanics are fine, however.