Complex sentence: They eventually settled on a 1930s Hollywood hotel with a "Twilight Zone" theme, but a new ride system had to be built, which would allow both more capacity inside the ride and allow the drop to be last.
Split into simpler sentences: They eventually settled on a 1930s Hollywood hotel with a "Twilight Zone" theme, but a new ride system had to be built. This would allow both more capacity inside the ride and allow the drop to be last.