Big showbuidings mean big rides. I'm confused as to why that is a bad thing for an amusement park.
But sight lines!
But honestly, I think this building is going to blend into the park far better than anybody expects and even if it looks ridiculous from outside the park, who cares.
Mission Breakout is probably the most gaudy thing Disney have ever built but I love it and in the list of what makes a good ride, the show building design is near the bottom.