I really think building a park around IP based lands is just a mistake. Maybe it's just me, but aside from WWoHP, no IP has even proven to me that it's even worth having a land. I just don't think IP lands work well.
Diagon works because it's supposed to be a shopping area in the books, but I feel like other lands like Cars Land, SWGE, SNW, etc look/feel like shopping malls with a ride or two rather than how lands used to be created with rides/shows around every corner and the occasional exit gift shop. And i'm not just talking MK or DL, USF was like this, too.
Pandora, TSL, and Avengers Campus doesn't either look like it takes the "shopping mall" approach, butnone of those lands are great, either. Pandora is the closest thing in that bunch, and it only has two rides, one which isa fine step up from Soarin, and another which is just a big WTF.
Idk, I feel like i've sort of lost track of my point and I started rambling a bit, but I just think that Universal will come to regret theming these lands so tightly to IPs, especially ones like HTTYD and Fantastic Beasts. HTTYD has never been as popular as some other Dreamworks properties here in the states and FB has sort of... never been all that popular. People only went to see the first one out of curiosity.