Imagine you're assembling the setlist for the new tour. You're picking and choosing from among the Queen catalog.
Some songs are "naturals"/"no-brainers"... Tie Your Mother Down, We Will Rock You (whatever version), Radio Gaga, I Want It All, Innuendo, etc. But not all...
Love Of My Life & The Show Must Go On, for instance - Does it even make sense for anyone other than Freddie to sing these songs?
I must say, for my own part, I suspect TSMGO might be omitted for this reason. Feel free to disagree, but even Elton's version just doesn't make it the way Freddie's did.