Agreed. The environment of MoM is insanely impressive, huge scale and ridiculously detailed, but I feel nothing for it. It lacks the creative spark of the other lands. Not a giant HP fan (but I like the rides well enough), so I’m not really one to peer into every window and read every poster on the wall, but Hogsmeade and Diagon are simply way more fun environments to be in imo.
It sounds like it may suffer the same issues as Star Wars Galaxy's Edge in that it's an impressive showcase of environmental design but it may not be emotionally resonant/relevant (because IP-wise like Batuu it's unfamiliar). Maybe it also lacks kinetic energy (which contributes so much charm to Main St. and New Orleans Square, in terms of comparable historic-urban lands).
Also, SWGE has the tension of the First Order and Resistance that provides some context to the land (though fewer SW fans care about this than the Empire/Rebellion). It gives
some dramatic tension to the air. We may not start out invested in the place but we can fairly easily get that there's a conflict potentially worth investing in.
Does Place Cachee have any story for guests? I'm watching the POVs to see and I'm not getting that Grindelwald is on the loose and causing panic or something. The world seems to have a mellow-joyous vibe (students chitchatting guests, jazz music...).
Noticing how effective the Igor character is around Darkmoor, not just as a personality but with the kinetic energy of his lurching gait, maybe a couple of more disruptive/charismatic story-telling characters could help in Place Cachee.
Maybe if the land had a 1920s newspaper hawker, they could be overtly announcing what tension/peril exists (e.g., Warning that Grindelwald is gathering followers...).
To add more kinetic energy (and make up for an odd lack of vehicles in the city), maybe the newspaper hawker has a bicycle. Another way to add a wheeled vehicle of sorts is a merchant character that pushes a cart, repositioning throughout the land.
This could be a flower merchant but all the flowers are funeral lilies and she could be bemoaning the deaths due to Grindewald and the rise of his dark following.
All this foreboding character story-building could happen during the day and that could lead up to a nighttime battle between Grindelwald, his followers, and the Auroras during a nighttime street-show on the streets of Paris in which projection mapping on the buildings/streets could show fire and destruction, and bursts of colored light from cast spells.
The show could have a narrator and could draw a narrative line between the events in 1927 Paris and the 1990s Harry Potter era ("In the Wizarding World, no matter what era, from ages long ago to today, dark forces will seek power, and wizards of honor must fight...blah, blah") and we see Dumbledore projected on the buildings, and then we see James and Lily Potter, and then we see Harry, Hermione, and Ron...creating some rhyming "poetry" as George Lucas described it, and helping to reconcile the world's split-stories.