They basically never remove features, and just add on more customization. You can get your desktop to behave exactly like Windows 95, if you want.
And the apps are some of the most productive around. Dolphin is the best file manager across every operating system, and it's not even close. Basic things like reading metadata is overlooked in all other file managers, but dolphin gives you a panel just for that. And then tabs, splits, thumbnails, and graph views.