There are many petitions about removing various features into 'Core Plugins'. And, that should be done with: Customizer, REST-API, XML-RPC, Comments, Links... This will make maintenance easier, and CP core lighter.
But, the main thing related to the Core Plugins would be an extra step during the CP installation - when everything is set up (database, language and admin account), a new screen will be presented to select core plugins to install.
Also, the Plugins menu should be expanded to show the Core Plugins page where the Core plugins can be installed and removed, and not to be mixed with other Plugins.