The improvements in Mission Control may be for many of us rather scarce, but really little could be improved in this new OS X El Capitan and Apple improves it in terms of the visibility of everything we have open on the Mac and managing the windows.
Many of us like to see and fiddle with different windows with applications, the browser and others, that is why this new version of Mission Control for OS X El Capitan improves the moment when we "get lost" and we see it necessary to start closing windows or organizing them better.
Apple's idea is simple, organize everything in a single layer without any of the open windows being hidden by the others. With a simple gesture sliding your finger from our mouse or trackpad we will see everything organized. We can also organize the open windows by hovering over and dragging to the top of the window where a new space will open for us and we will have everything organized to our liking.
The current Mission Control is not bad, although it is true that the next version of OS X El Capitan surpasses it in comfort of use, organization and visibility. There is hardly tomorrow to start enjoying the new improvements that this operating system brings to our Mac and we are sure that we will all find and positively assess the changes and improvements implemented by Apple.