Fan's want other IP's outside of what Universal and use easily
Not saying the current offering won't make people happy but if tickets aren't selling then things like Demon Hunters, Pokemon/Nintendo (outside of Yoshi.....Kirby, Animal crossing, Zelda), Fortnite (yeah yeah rumors for HHN but this event is perfect for it), Fallout (It was at HHN but this is again a more perfect place for that IP), Minecraft, my hero academia, Frieren: Beyond Journey's End (its newer but the base is growing super quickly), and Dragonball Z, avatar the Last air bender, TMNT, Sonic the Hedgehog (movies or games)
We also have IPs they do have the rights to just missing like Wicked and Hello Kitty (they have a ton of other characters and I've seen the costumes come to the other cafes)
Once again, I'm going and will have a good time but doesn't mean much if normal people aren't interested in the current offering. Nintendo would be you think the easiest win, either via other IPs or even just characters like Bowser that people want to see and Pokemon would just kill it. If you made the Plaza into Pokemon Plaza, with live music and a dance show, with meet and greets and food booths I think that would be a hugeeeee hit and draw in a ton of people without too much money or effort. But seeing them dropping the season pass price and the 40 dollar Ap tickets doesn't seem like the best sign to me, along from just talking to people who say it sounds cool but not sure if its worth the money because of so many repeating IPs