I really wish that UX designers would stop the insanity of over-simplify things into near-uselessness. People need to do real work in an operating system including organizing, sorting and arranging files. The basic functionality of the Windows OS "Detail" file view hasn't gained significant NEW functionality in nearly forever.
Rounding corners and harmonizing colors is nice but it's not what I care about. I wish they'd demonstrate their awesome design skills by working out a reasonably intuitive UX to do nested sorting. And do so without losing any existing functionality.
Another example is Firefox. Almost every UX change in the past two years has made the browser noticeably worse and requires serious users to hack CSS under the hood to fix. They keep taking things away and rearranging deck chairs while not adding obviously missing functionality like a non-right-click menu UX to manage sidebar lists.
I agree so much on this. The biggest problem for me is dumbing down the file browser when using MS office products. I used to have a workflow of quickly organizing files directly from office. But the modern file browser is so much less efficient and the extra clicks frustrate me a lot