I haven't really worked out the extent of the route yet, so I certainly don't mind the assist. I'm also interested in the idea of encouraging the player to use magic, while also leaving the door open to choose not to if they don't feel like it and build up their own stats. While the extra stats wouldn't help them in the demo, it would certainly be handy for those who just want to run a 'pure' story.
I do like the one for the fifth, though I'm torn between a tantrum and a small breakdown a la Lesson Zero. Unhinged Twilight would be fun, and give a pretty good reason as to why she throws herself into her studies and shuts the player out.