Keep in mind we still have absolutely no idea what the two main attractions will actually consist of. All ideas floating around so far have pretty much just been speculation based on patents, concept art and, well, guesses.
I'm feeling pretty confident in the two settings for the main attractions (or, rather, at least the entrances and queues for them,) but I fully admit that I still have no clue what the rides will be themselves.
The one on the left, the British MoM, seems like it could be a dark ride, because the building is quite large and I believe it has a fairly straightforward load area. The one on the right, the French Ministry, seems like it has much less space to work with, at least going by the footprint, which led some of us to guess some sort of tower attraction. But, it could easily be a flying theater, or even a walk-through, for all we know.
Given how much we actually know about the other lands in the park, not knowing what these attractions will be like is part of the reason why the Wizarding land in EU has been the most intriguing to me. Looks like we might be starting to pin down some of the land details, but the ride systems and story elements are still complete mysteries to me.