It'd be great if we could have an option to change Monochrome provider for N+ devices.

I'd rather this not be the default, but it would be great to have a "set as WebView implementation" checkbox for N+ devices. This saves me from running an adb command and needing to look up package names (I don't have them all memorized).

The only programmatic way I know of changing the webview implementation is:

$ adb shell cmd webviewupdate set-webview-implementation com.google.android.webview

The last argument is the package name, which should change as appropriate. This command should be run only after installation succeeds.