I just put my phone on W10 TP yesterday with build 10166. Unfortunately I'm finding that in addition to the many bugs and missing features (which I have confidence will be fixed with time) I dislike almost all the UI changes.
Wireframe icons: It's much harder to look at the icons at the top of the screen and immediately know what they are intended to communicate. For example the WiFi icon is so thin it's very difficult to see the difference between the filled and empty bars.
Tiles: I can't figure out why the designers shrank the icons of many apps within their tiles. For example phone and messaging icons are tiny on the wide tiles. And the number of notifications is now tiny in the corner instead of a large easily visible font.
Tile folders: These used to have clear tile borders. Now the icons seem to be floating in space within the folder.
All of this makes what was formerly a very user-friendly UI into eye strain city!
Wireframe icons: It's much harder to look at the icons at the top of the screen and immediately know what they are intended to communicate. For example the WiFi icon is so thin it's very difficult to see the difference between the filled and empty bars.
Tiles: I can't figure out why the designers shrank the icons of many apps within their tiles. For example phone and messaging icons are tiny on the wide tiles. And the number of notifications is now tiny in the corner instead of a large easily visible font.
Tile folders: These used to have clear tile borders. Now the icons seem to be floating in space within the folder.
All of this makes what was formerly a very user-friendly UI into eye strain city!