I agree with FE having very thick plotlines and lots of twists, but I also do like Zelda's gameplay better... but that's just because I'm not so great with tactics games. Like I said, I love FE for the stories and characters, which is why I force myself through the gameplay.
I've always wanted Zelda to take up the art style used in the GCN&Wii FE titles.... "soft" cel-shading is what it is, and I've always liked the look of it. I think it'd be a great way to please fans of realistic graphics and fans of cel-shading at the same time.