Just beat the game tonight. It's definitely my favorite 3DS game so far and I think it's actually beaten PoR/RD as my favorite Fire Emblem. I didn't think I'd like the characters as much as I did, the plot was well-done, and the additions to the gameplay were fantastic.
Endgame can be difficult if you don't watch yourself. I didn't have too much trouble with it by just rushing the boss, but I had to restart twice because of stupid lucky criticals from Assassins with Killing Edges. >_>