It'd honestly be great to finally be able to see the grand battles that Fire Emblem simulates. I mean, while playing the game on a confined segmented map, you can only imagine so much (Radiant Dawn did a great job on really giving you the feel of grand battles however).
I mean, this is what's actually happening during a battle:
I definitely would love to play a game that had that feel while still having the strong story and characterization that the series provides.