'Should there be more or less exclusives' is not a yes/no question. 
I think there should be more exclusives. If they make a game cross-platform then they need to design the game to not need any of the special features each console provides. If it's an exclusive they can design the game to be as good as possible for that console without worrying about cross-compatibility.
And if all consoles have exactly the same games, and none of them use the special features of a console, then what the hell is the point of multiple consoles?
I think there should be more exclusives. If they make a game cross-platform then they need to design the game to not need any of the special features each console provides. If it's an exclusive they can design the game to be as good as possible for that console without worrying about cross-compatibility.
And if all consoles have exactly the same games, and none of them use the special features of a console, then what the hell is the point of multiple consoles?