In my team there was another wish for a feature request.
We noticed that anyone always has the ability to duplicate a board. If this happens
it will break a lot of our structure and functionality due to automations etc.
We contacted Monday support and they said currently it is not possible to prevent this, except making boards private, which does not help if it is mandatory that a lot people have access to the board.
We think it would be a great feature to add a permission tag for duplicating boards.