Sure, but you can lose guests in the blink of an eye with a single mistake. Marketing isn't just getting guests into the gates. If those initial reviews are negative and trash it for not being authentic or having the charm of the first two lands, you can absolutely bet that you'll lose a portion of the market and harm the revisit potential of it all. They'll also be far less likely to invest time in the land or in merch/food/etc if it's not the experience they're looking for.
Definitely not meh, but you'd absolutely hear some disappointment knowing that this means they'd never get to see the London MoM get built.
Last I heard, insiders on here were saying that the FFL hopes for MoM are dead.