Very good and well detailed review. I've heard that you can tap amiibo-mid battle. Seeing as I have all Fire Emblem amiibo (bar Corrin) i'll be intrigued to see this.
That turn back wheel will help a lot, especially as the characters can only hold one item! That's going to be a tough change to get used to.
I still actually have to knuckle down to finish Fates but this is a day one purchase for me!