It would be great if there would be a ${bamboo.projectKey} variable. We follow very strict naming conventions, which results in the project key being used in any and all parts of our development infrastructure, including Bamboo and Subversion.

As such, this would allow us to use Subversion URLs such as http://svn.company.tld/${bamboo.projectKey}/trunk to automatically point to the correct SVN repository, without having to (manually) change the URL in each and every plan.