Combine different Mailing Lists in the Support Portal, when opening a case. Right now you can use only one Mailing List per case. When opening cases it would be good to choose to send updates to 2 or more mailing lists depending on the audience required. So rather than creating a new mailing list for every possible combination of recipients, choosing more than one mailing list per case, would enable the right people to get updates and reduce the noise for others. E.g. Operations + Project A Mailing list if it only concerns that one project, and Operations + Project A + Project B if it concerns all projects.