I will whine a little:
1. Edge doesn't work correctly. MS should have saved it for the next software update, vs. making people hate it right off the bat due to many things it doesn't do correctly. I have only used it enough to not like it, and am back to FF.
2. The new Photo viewer doesn't work correctly. Did a little registry work to bring back the old Photo Viewer and make it default, as it is still there, but hidden.
3. Tiles for the apps that I want on the start menu are ugly. Fortunately you can remove them all and have a decent and small start menu.
4. Also related to the start menu, I can't change the number of icons on the LH side of the start menu. Most Used stays at six. If I open different apps, and drag it up, I still only see 6, and I don't see an option to change that.
5. You can't change default app settings from opening the app. And this doesn't apply to everything. For some apps, it asks you if you want to change it, but answering will not change it. You have to go to Settings/System/Default apps to actually make the change. I have no idea why they did this, especially since it doesn't apply to everything anyway (Photos you can still change from a right-click).