Rest all are fine.
Just some suggestions:
1) When the Windows + s or the search icon is clicked please let the start11 search bar be opened (or an option would be better)
2) And in the context menu please disable the option 'pin to start' instead show 'pin to start11' without clicking more options. Without this, it causes confusion
3) Same point 2 for windows search so that it can be quick to pin the app into start11
4) All the above points should not be permanent change. It should be easy to revert back to original (System default)