I have never heard of Fire Emblem, because I live under a rock. =(
But I have heard of this "RPG" genre. In my experience, I play an RPG once and never complete it again. I'll start over, but I'll never beat it again. I think this is true for every RPG I've ever played... except maybe 'Phantasy Star IV', which the two completion times were decades apart.
I'm a little "dumb" when it comes to video games, so the only games I end up playing all the way through again or either short or button mashers. Except for the MGS games which I play again just to study story structure. Sadly, I try to emulate my screenwriting with MGS... which I'm sure everyone will say is wrong, but I think the mixture of action and story are the best.
In conclusion, I'm sorry this response had nothing to do with Fire Emblem. I await to be modded.