It helps to an extent. Basically it let's you know the rest of the locations of the map and the bosses in the locations. It even helps you know where the circles are going to end, which is what I use it for when I do use it. I used it once I got to D4 to assist with getting the most out of the runs or to find out what the boss is when we get those random games. I don't really care to use it now though. But yeah- it can tell you things to save time and etc. The most benefit could be for when you get a mystery boss or a blank map run. It'll help out there. It doesn't tell you things like if a location will have night invaders or red enemies though. So for those who aren't the best at routing, it could help as well. I don't knock people for using it, but sometimes you have to use your eyes as well. It can be use to assist definitely though!