I don't use it because I don't like Metro UI apps but a large part of the list you give is already supported in Windows 8: calendar, contacts, photos (thru OneD

I don't use it because I don't like Metro UI apps but a large part of the list you give is already supported in Windows 8: calendar, contacts, photos (thru OneDrive). Some are available in a cross-platform fashion (calendar, contacts via MS account) others require a Windows Phone (IE opened tabs sharing, some systems settings). So I don't see them being removed from Windows 10 and don't really understand what you are exactly disappointed about.