When looking through all the available units we need a way to arrange them by a specific skill from highest to lowest. In the current build of the game if you need a unit with who is good at a specific thing then to find the best one you need to look at each unit individually which takes a long time (especially in the late game) and is tedious. So if there was a way to click a drop down menu with a list of all the skills that you can click on to arrange all the units from best to worst in that skill than this wouldn't take as long and not be as tedious.