I was staring at my passage guide trying to figure out what I was looking at when I realized that the PG commentaries section no longer just displays the resource title. Now it also displays the section name--is this new in 5.1 or have I just been non-observant?
I don't like it because it makes it hard to identify resources. Often the section name will take up the entire line and it completely hides the resource title. I like that the mouseover on the section name does provide a content preview pop-up that people have asked for, but I think it makes it more difficult to use.
I like to use the passage guide in a narrow window like below, and the change makes it near impossible to tell which resource is which:

It even hides the "star", which (although I never use it) shouldn't disappear for proper interface design.
Even if I have the window wider, it is still a problem in some instances. And the fact that the resource names are after the section names makes it hard to scan to find a particular series.

Could the resource name be put first? Please? That would be my preference--it is more important than the section name.
I can see a similar problem occurring when the resource name is too long, but maybe the short name could be used in those instances (or all instances, if necessary).
I realize this is the way that the Collections section has acted since the beginning, but since I use it less than the Commentaries section, I haven't been bothered until now. I would prefer that the Collections section also put the resource title first as well.
Section names are pretty useless in general, and especially in commentaries, as can be seen from the examples.