I hid the Cortana bar thing. Right click on taskbar>search>hidden. Also hid the task view button. Right click on task bar> uncheck show task view button. Also hated how when you would goto file explorer it would always show recent file and folders. I wanted it going to "This PC" to show my drives like normal. For that you click on file explorer> right click on quick access and goto options> then pull the drop down bar to "This PC". Also if you are doing the upgrade and don't feel like going back to 7 you have 30 days to decide before it will delete itself if. If not you can free up some hard drive space and dump it yourself under settings> system> storage> this pc> temporary files> delete previous versions. This is useful if you are running a smaller SSD and need your space back. Overall I am happy with it.What stuff did you change?