Segments are useful for data pull of specific requirements, esp. customized pathing. However, sometimes segments are created for one-time use and don't need to be saved in the segments manager. I'm hoping we can bring back the function to create a segment without saving. (I believe Ad Hoc has this function in segment builder). Another idea is to create folder or tags for segments so it's easier to group things together and search.
Raising this idea because a lot of us are facing the struggle of a long list of segments on the left panel, which is hard to navigate or find the commonly used segments.