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Initially, we were debating between two versions of the panel called either "Layers" or "Data Sets." While user feedback was split, we decided to go with "Data Sets" for future iterations. 
We initially had an "Add Towers" button that would automatically add some number of WiFi towers to the map. When we had the button directly beneath the list of layers, it was confusing for users because the task of adding towers was not logically connected to filtering layer views.
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