The one and only thing that bothered me about this movie was that Nanoha's magical girl learning process was much easier in this movie and consequently, I'd say, her initial power difference with Fate looked much smaller. Even the time when she did lose was almost made to look like she didn't even try to put up a fight at all.

Fate was fully trained already when this story began, Nanoha hardly knew what a mage is. While Nanoha is the ace of aces, this still made Fate look unnecessarily weak. And made me even pity Teana of the future who was trying to convince herself that genetics isn't the only thing making a great mage.

I'm happy the number of henshin scenes was kept to minimum. And that Chrono didn't get one.

If I recall correctly there was some talk about the studio changing the device voices. I'm happy that didn't happen so that I could retain my old C&C vibes from them.