Problems/Debates and Positions have a bottom pane that is vertically divided into two columns. On the left in Problems/Debates is the column listing people and positions. On the right in Problems/Debates is the column listing sub-debates. The same is true of Positions, except the left column lists arguments.
Meanwhile, the Arguments bottom pane is not divided. Instead it has two tabs. One tab displays "where made" and the other displays counterarguments.
I think it would be more useful if the Arguments bottom pane were divided. Then I could see "where made" and "counterarguments" at the same time, just like I can see all the other information at the same time in the Problems/Debates view and the Positions view. This would also save me from having to click on the tabs.
I've considered doing this before; my hesitation is that I think it will take up too much horizontal space for all the columns of those 2 tables. That might be fine if Hypernomicon is maximized on a 2560-width display but sometimes I like to size the window down.
Maybe the tables should be arranged vertically so that Counterarguments is below "Where made", rather than having them side-to-side like in Problem/Debates and Positions. I don't know about you but I have very few Argument records with more than one Counterargument listed, so for me at least there should usually be enough vertical space to show the Where made and Counterarguments without taking too much vertical space from the other stuff in the main window.