Great list.
I would have added songs like '39, Rock it (Prime Jive), Drowse, Tenement Funster, etc. instead of other somewhat more commercial choices.
There are several songs in that list that have a great concept, idea or a specific groundbreaking quality (sound, lyric, attitude) that saves them from being regular -even boring- songs. For instance, if I wanted to show "More of that Jazz" to a friend, I would only play the first few seconds, the riff and first chorus and then skip to the next underrated Queen gem.
I liked Was it all Worth it best when it was revisited for Innuendo as The Show Must Go On :).