Thanks all!
I think this is by far my favorite playset now. Since it's been out, it's been growing on me more and more - I was too young to have the Waterfall as a kid (my first ponies were year 5s, and I never got any playsets) and I always loved it but Sprinkles was not my most favorite Playset pony of all time, so... Cascade may or may not have taken over Sprinkle's cloud palace for the last decade or so... but, now there's harmony again since Cascade finally found her home.
Silly me.