I'd love to do Europe, WBTA, Hawaii, etc... Those are definitely dream itineraries.
As far as ones that are actually doable for our family and our schedule/issues/budget, the one (only one so far) we've been on was pretty much ideal - I keep looking at what's available coming up, and they just aren't good enough! It was the 7 night HOTS cruise on the Magic out of NYC. Cool in NY, warm in the Carribean. 4 sea days, a stop at Castaway, and a stop at PC with transportation & ticket to WDW included. They're not running that itinerary at all in 2020, and I have all my fingers and toes crossed that they'll bring it back in 2021 because it was really perfect for us.