[@Corporal Lance]
[@Penultimate_Pi]
As I stated earlier, I have quite a large amount of not only GM experience, but Fire Emblem rp experience. If possible I would like to contribute as a 3rd GM, not just a player with ideas.

If you want, I will link the (now dead) FE battle rp I created (from scratch and single-handed). I actually have rebuilt it mechanically and I'm testing it on Facebook with some close friends.

EDIT:
If you want to keep the story and world your own, then I would be just fine with working only on mechanics, such as classes, battle, maps, skills and stats.