I think the dialer, people and lock screen are great examples of change for the sake of change that are a step backwards. The lock screen changes are minimal but the other two have just become rubbish.
Change for the sake of change is basically every poor design decision in W10M. You can make a drinking game out of it.
"Let's make the headers all uppercase and in bold! Totally different!"
"Let's make the fonts thinner and harder to see! Good idea!"
"Let's make the profile contact pictures round because people aren't squares! Google+!"
"Let's rearrange the UI and put buttons at the top of the screen. Android does it!"
"Let's add that double tap feature that iOS has to bring the screen down so people can reach the buttons we put at the top of the screen!"
"Let's make the toggles round instead of square, like Android!"
"Let's make the send button a paper airplane! Yeah, Android!
"Let's make the settings screen a boring list with icons, like in Android 4.0!"
"Let's make the icons wireframe! Why? No reason but iOS does it!
"Let's take out all the signature WP animations and just use a cheesy zoom effect! People will think it's faster! Android style!"
"Let's make the phone icon lean at a 45 degree angle! No reason but it looks like Android and iOS!
"Let's make the task switcher apps go from left to right! Yep, iOS!"