I agree with everything this guy said, however as much as I loved the previous game, this easily has the chance to be so much better already.
One thing to think on though, with the ambush on the guy in the dungeon, after my first playthrough I went back and attacked early to see what would happen, the way it plays out doing so should have saved her armor as I did it before he destroyed it, so for continuity change the scene so she still gets hit, or change it so you can save her armorial, maybe giving her an advantage when she goes after the second brother which could lead to a reason for the #1 player to not ignore you when you try to leave
Up to you, just a few suggestions as I already love the game