In the previous Bitbucket/Slack integration, it was to manually create a webhook for each repository. This could be done via API to be applied to all repositories.
In the new integration, the webhooks are added to all repositories in the account as soon as the "Chat Notifications" is clicked on any one of the repositories. However, we will still need to manually click "Connect to Slack" to integrate. Once the account is integrated, we would need to manually access each repository in the account to add subscription.
It would be nice if we could integrate Bitbucket with Slack and subscribe to notifications for multiple repositories within an account.