I want a mode where you can practice segments, but not the whole of the map. There are often times when a map is easy to pass or fc until THAT PART. I want to be able to say, "Hey, let me take [Difficult part of map], and have the map just be the five seconds before and after that part." and be able to simply practice that one segment over and over. I feel like this would be more useful for longer maps, since you can just redo minute-long maps, but when I was trying to pass The Pretender first time i few months ago I remember the streams 3 minutes into the map were my only weakness. I quit trying to pass it for a long time since i didn't want to bother breezing through 3 minutes of easy mapping for the difficult section.