Ability to subscribe to notifications of multiple repositories

In a team accounts team can have multiple repositories, categorized into 'projects'. Users - especially team/project leaders need to know about changes in multiple repositories within same project (or even within whole bitbucket 'team' account). Currently those users need to edit notification subscriptions one-by-one; however it would be helpful to be able to subscribe to all in one project.

As an example - in our team we have over 100 repositories - subscribing to all of those can be obviously very time-consuming task.