So I saw this in DC and am so happy to hear of some of the changes happening!
1. The boy band was horrible, and in my opinion the show never recovered from that point in the second act, so this change is a huge win! Miss Argentina had a quick walk-across and audiences applauded at just her presence, so I believe she will be a much more welcomed introduction to the netherworld than some random boy band.
2. The tone of BJs comedy was truly all over the place, with a lot of bits and jokes for pure reaction, but not necessarily tied to the actual character or storytelling. Random F-bombs, awkward audience takes, etc.
3. The set outshines the show. As it was, this was a show I recommended to everyone to see the sets and effects alone. They were lie nothing I have ever seen, and as a Burton fan, met every expectation x10. But how long can that carry a serviceable show? Would the show work without the set...nope.
4. Not one hummable tune in the score. The music was fine, the talent wonderful, but lyrics clunky and style all over the place.
I am happy that the team was not cocky and is making changes. I hope they continue through the preview process to finess this, as it is a very fun premise and could really bring something new to the broadway.