>>44947840Barely. It's got better Pokemon selection, which makes it better for replay value if you ever intend to revisit an Alola game. The first three islands play out more or less the same in Ultra as in vanilla, so finding a half-completed save file and playing from Poni Island on may be the best way to go if you don't want to revisit Lillie's Great Adventure in its entirety.
What I'm saying is that you should only acquire Ultra if you ever feel like playing Moon again.