There's a lot they could have done to reduce the structure height without impacting the ride experience.
The roof girders appear to be 8-10' tall and make up about 20% of the building's height, but provide nothing meaningful to the ride experience. They could have easily been designed with less depth by using beefier members. Additionally, the structure appears similar to the new GOTG building, with a single central column; given that the building will be broken into many smaller show scenes, they could have added columns to reduce the span length, which would also reduce the structural depth needed.
The building also doesn't specifically *need* a parapet wall around the edges; a less visually intrusive guardrail could be used to protect workers. Any roof-mounted equipment could be concealed using localized screens, which would be more easily obscured, set back from the visible edge.
These changes could knock up to 10' off the height for minimal (or no) cost difference. But instead we have a massive hulking box plopped down next to carefully-designed scaled architecture. As with so many WDI projects lately, this is an unforced error due to a lack of interdisciplinary coordination and technical knowledge. Given the ridiculous costs these days, there's really no excuse.