I agree with the OP but I also believe a major theme is purpose.
The dragons wait to fulfil their purpose assigned by Hylia, Impa dutifully performs hers over an epoch, Groose seems to realise his and make a change for the better, Link and Zelda accept their roles as protectors for the first time.
Finally on a the antagonists side Ghirahim knows his purpose, is desperate to perform it but is prevented by his master being imprisoned. This desire seems to build and results in his increased brutality over the game, finally becoming ecstatic when he is free to fulfil what he was created to do.