Hi Paul
I do not know whether this has been suggested before or not but it would be really nice to be able to group project and the ability to set access rights on the “project group”.
/Tom
I second this motion 
Thanks for the suggestion, I’ve created this item in Trello to track it, and I’ll expand on the details of it over the weekend:
https://trello.com/card/grouping-of-projects-in-the-dashboard/4e907de70880ba000079b75c/132
Paul