This UI regression was the first thing I noticed about El Capitan. When the Spaces Bar appears at the top of the screen, it shows Desktop 1, Desktop 2, etc., and you have to move the pointer up there to get the graphical view. The titles are not useful, however seeing the individual desktops (Yosemite behaviour) is very useful. I can't find a setting to display the thumbnails by default, either with or without the titles.
For the most part, Apple products are more polished than others, but Apple does some brain-dead things sometimes. The other thing that drives me nuts is capslock doesn't turn on unless you hold it down, but a normal keypress will turn capslock off (mid 2012 Retina MacBook Pro). Okay there might be someone who is annoyed that they accidentally turn capslock on sometimes, but for the people who can type, sheesh the "delay to turn capslock on" should be configurable.
One workaround for the Spaces Bar is to use the upper-left or upper-right hot corner for Mission Control. If you put your pointer into that corner the graphical view of the desktops will show automatically. However I have had years of using the lower-right hot corner to show Spaces and it's going to be difficult for me to relearn. Whether or not the desktop thumbnails show by default when Mission Control is opened really should be configurable.