In songwriting, I'm a sucker for a good bridge in a song. To make an ordinary song in the standard Verse-Chorus-Verse-Chorus-Chorus-fade turn into something extraordinary for me, all you need to do is change key and insert a bridge before the two ending choruses.
Been listening to the Sarah Blasko album I picked up in Sydney, and Don't U Eva works for me in this way. Love that bridge and its synth backing line. Lovely.