When you map a model to in iModel the display name that will show up in the model tree within Design Review will always be the file name. If you're using PW to synchronize the files this file name will be a document code. This code is not user friendly and says very limited information about the content and purpose of the model. And especially in cases where you synch DGNs and Revit models into a single iModel the list of models in the model tree can be very long and it will be hard for the average users to find the right information.
It would be extremely useful if we could set a display name for a mapped model which will be the one shown in the model tree. Please see the attached image for how the proposed model tree could look like.
I can imagine this option being implemented on the connection configuration page for each mapped model with just an extra button that allows you to set a display name.