yeah, that last one would definitely be unexpected!
I still don't see why it's so hard to see her as a boss. And if you forgot, Kairi has a Keyblade and actually fights in KH2! Just becuase she's a princess doesn't mean she can't be ya down ya know. And with Namine controlling Sora's memories, she may even be able to control you in battle.
Come to think of it, that could be like a "Second Stage" to the battle. Yeah. For the second-stage of the fight against her, you'd be fighting Sora with all his abilities activated as Riku with King Mickey, Donald, and Goofy as your usable party. You'd have to beat back Sora while trying to beat down Namine, who is using every available spell at the max level; including some that were left behind in KH. (like stopga and graviga). Now THAT would be fun, especially since you would be fighting your version of Sora with your version of Riku, Donald, Goofy, and Mickey. And for a third stage, you'd have to play with Roxas wielding two keyblades against Sora and Namine alone. No spells and a very limited supply of items. (If you had any eft from the first two battles.)
Dude, if that was her boss fight, it would be so sweet!!! XD