I understand that if the building is purely scenery but if it was to be at a playable scale (scripted building) it would be more practical to be shrunk down.
Technically, the Barracks shouldn't be nearly as big as the refinery but it is because practicality dictates this. The temple should remain the biggest building but maybe not that much bigger? Scaling it's total length and width down would benefit the metal.mesh texture as well, the closer it can remain to its original height by comparison would keep that cinematic example.
Have the original and a scaled down version by all means, the scaled down one could could just be dubbed 'Temple of Nod Shrine' and be made into an actual building with a health/armour bar and MCT.