Multiple-attribute 3D symbols

[MennoNijhuis]

I'm working for a wind farm development company. I want to show wind turbines in a 3D scene, as 3D objects. But as wind turbines come in lots of different shapes and sizes I want to have symbols which dynamically adjust the length of the tower as well as the rotor diameter based a feature's attributes. I can now already symbolise the wind turbines with just one attribute, but I want to symbolise it with multiple attributes. I could try to create a separate symbol for every combination of tower length and rotor diameter, but with a dataset of a few thousand turbines, with over 200 different combinations of height and diameter, this is not a reasonable idea.

[KoryKramer]

Is this not already possible by using 'Allow symbol property connections'?  When you enable that, you'll see the No attribute mapping defined button: 

Map the symbol properties to attributes in your data: Attribute-driven symbology—ArcGIS Pro | Documentation 

Does that work for you?