I think I’d scrap most of the closing tracks, to be honest! Here’s how I would do it:I agree with you regarding "Time Will Pass You By." Although if I had my way, I would've scrapped it entirely.
I'm choosing to regard the track list of Australian or Japanese edition of Body Language as the official track list because "Slo Motion" is the perfect closer, imo.
With X, I feel like "Cosmic" is a great closing track.
I think that "Fine" is a solid closing track for Kiss Me Once, although I guess that you could also substitute it for the title track. The same goes with Disco closing with "Celebrate You," although it could also close with "Say Something," I guess.
What would you close each album with?
Time Will Pass You By to At the End of the Day. The latter is a much more interesting song.
After Dark to Slow Motion. It’s truly baffling how they missed this song, it’s one of Kylie’s greatest!
Cosmic to Don't Know What It Is. This might be controversial, but I love the 00s rom-com feel of this track. I can totally imagine it playing at the end of a film.
Fine to Waiting for the Sun. Again, same as At the End of the Day.
Celebrate You to Spotlight. I feel like Spotlight sounds like the track they play at the end of the night at the club, when the lights are turning on and everyone's about to leave. It's a great track.