Right now if you add CAD data to Pro it defaults to making a separate layer for each layer in CAD. If the source CAD has a great many layers, as they often do, this results in a giant pile of layer clutter that can be time consuming to remove. Also a problem because the more layers present the slower the entire program goes. It'd be great if there were some options to better control how CAD data is added so that endless piles of layer clutter can be minimized. A great one would be to NOT make a layer from every CAD layer and just group them by object type. Another pain is how Pro makes a GIS layer structure for object types that don't actually exist in the source CAD. Similar slow down and tedious removal processes apply here as well.