Perhaps, as you said, you drew the building too tall. But conversely, what I don't understand is, when land is so scarce, why do they build such short buildings? Why not put a four or five story building there with a high-ceiling event space on the ground floor and four or five stories of break rooms, offices, whatever above? Put all the things they need there so other land doesn't need to be dedicated to backstage functions.
I would think such a taller building could still avoid sightline issues from within SNW, and if the facade facing Celestial Park was cool, the building could contribute to, rather than detract from, the theme and skyline.