Theme Selection in AI Settings

I would like to suggest that within the AI settings where you can choose to have certain things populated or not, add a drop-down menu or keyword tab to where you can select a particular type.
Much like the special room selection already built in. However, for better access ability, I believe that being able to select type of objects, flooring, etc in the AI settings would be more practical.
Example: I am building a village so I would use the village selection, however I want to go with a metallic aesthetics, I could go into the AI settings to select particular type of walks and floors to auto generate.