The ladder mechanic made childhood fantasies much more interesting, especially when you mix up the party
My favorite to play on ladders was Selphie, Squall, and Rinoa (in random orders).
Occasionally replacing Squall with Irvine and tossing Quistis into the mix here and there too. Irvine and two girls and naughty ladder play. That's just gold for some fun fanfics/comics