This thread is simple. You name a movie and ask name composers who would've done good jobs on those scores other than the composer who actually did them. Here, I'll start.
What if James Horner did the score to Pirates Of The Carribean and what if John Debney, David Newman, or Thomas Newman did the music to a theatrically released My Little Pony: Equestria Girls movie?

What if John Debney did the score to Tommy Boy?

What if David Newman did the TV miniseries Houdini.