These theme parts do not work to quite the degree you described above. There isn't a Jurassic Park team that designs everything on their own and a Harry Potter team that's never consulted until their entire plan seems to be ruined by the Jurassic Park team. While they might have teams set aside for the initial design of the area, it's not like they keep those teams on staff full time for that one specific area in case anything with that area ever needs to be modified in the future. And everything has to go through a park oversight anyway. So whatever they did the Jurassic Park area, the park overlords were aware of whatever might happen to every other area. It's not like it was done in a bubble with no understanding outside of that bubble. Simply put, I don't think they really cared about the sight line from Hogsmeade. You keep trying to compare universal to Walt Disney World lands, and the simple fact is they are two different parks and they are run two different ways. While they are competitors, they are not alike. Universal has never really shown that much care for sight lines within lands before. Harry Potter land is a little bit unique for them in that regard.