Layers Panel: Layers Name Available Width
I like my Layers Panel thumbnails to be large, like really large, larger than 'Large' for sure, so that i can easily see what's going on. I also like to name my layers briefly but accurately for the same reason. I don't have a big, wide screen however, so for me every tiny width saving matters. And here i come to the thing that infuriates me: why does Illustrator already trim layers names when there is still plenty room for them to be displayed in full?
Elisei Kulikovsky commented
Yes, the right margin should be narrowed.
Yes, I completely agree. Very poor use of space in the layers panel!